| 反人类 |    [ fǎn rén leì  ]    inhuman | 
| 反人类罪 |    [ fǎn rén leì zuì  ]    crimes against humanity | 
| 反侧 |    [ fǎn cè  ]    to toss and turn | 
| 反传算法 |    [ fǎn chuán suàn fǎ  ]    back propagation algorithm | 
| 反倾销 |    [ fǎn qīng  ]    anti-dumping | 
| 反光镜 |    [ fǎn guāng jìng  ]    reflector (typically concave, as in a torch), mirror (typically plane or convex) | 
| 反函数 |    [ fǎn hán shù  ]    inverse function (math.) | 
| 反动 |    [ fǎn dòng  ]    reaction, reactionary | 
| 反动分子 |    [ fǎn dòng fèn zǐ  ]    reactionaries, reactionary elements | 
| 反动势力 |    [ fǎn dòng shì li  ]    reactionary forces (esp. in Marxist rhetoric) | 
| 反动派 |    [ fǎn dòng paì  ]    reactionaries | 
| 反反复复 |    [ fǎn fǎn fù fù  ]    repeatedly, time and time again | 
| 反叛分子 |    [ fǎn pàn fèn zǐ  ]    insurgent, rebel | 
| 反右派斗争 |    [ fǎn yoù paì doù zhēng  ]    Anti-Rightist Movement, Mao's purge of "rightists" after the Hundred Flowers Campaign ended in 1957 | 
| 反右运动 |    [ fǎn yoù yùn dòng  ]    Anti-Rightist Movement, Mao's purge of "rightists" after the Hundred Flowers Campaign ended in 1957 | 
| 反唇相讥 |    [ fǎn chún xiāng jī  ]    to answer back sarcastically (idiom), to retort | 
| 反问 |    [ fǎn wèn  ]    to ask (a question) in reply, to answer a question with a question, rhetorical question | 
| 反问句 |    [ fǎn wèn jù  ]    rhetorical question | 
| 反问语气 |    [ fǎn wèn yǔ qì  ]    tone of one's voice when asking a rhetorical question | 
| 反嘴鹬 |    [ fǎn zuǐ yù  ]    (bird species of China) pied avocet (Recurvirostra avosetta) | 
| 反围剿 |    [ fǎn weí  ]    communist attack against the Guomindang's encircle and annihilate campaign | 
| 反垄断 |    [ fǎn lǒng duàn  ]    anti-trust legislation, anti-monopoly | 
| 反垄断法 |    [ fǎn lǒng duàn fǎ  ]    anti-trust law, legislation again monopolies | 
| 反安慰剂 |    [ fǎn ān weì jì  ]    nocebo | 
| 反客为主 |    [ fǎn kè weí zhǔ  ]    lit. the guest acts as host (idiom); fig. to turn from passive to active behavior | 
| 反密码子 |    [ fǎn mì mǎ zi  ]    anticodon | 
| 反射动作 |    [ fǎn shè dòng zuò  ]    reflex action | 
| 反射区治疗 |    [ fǎn shè qū zhì  ]    reflexology (alternative medicine) | 
| 反射星云 |    [ fǎn shè xīng yún  ]    reflection nebula | 
| 反射疗法 |    [ fǎn shè fǎ  ]    reflexology (alternative medicine) | 
| 反射镜 |    [ fǎn shè jìng  ]    reflector | 
| 反对 |    [ fǎn duì  ]    to fight against, to oppose, to be opposed to, opposition | 
| 反对派 |    [ fǎn duì paì  ]    opposition faction | 
| 反对票 |    [ fǎn duì  ]    dissenting vote | 
| 反对党 |    [ fǎn duì dǎng  ]    opposition (political) party | 
| 反导 |    [ fǎn daǒ  ]    anti-missile | 
| 反导导弹 |    [ fǎn daǒ daǒ dàn  ]    anti-missile missile (such as the Patriot Missile) | 
| 反导弹 |    [ fǎn daǒ dàn  ]    anti-missile | 
| 反导系统 |    [ fǎn daǒ xì tǒng  ]    anti-missile system, missile defense system | 
| 反弹 |    [ fǎn tán  ]    to bounce, to bounce back, to boomerang, to ricochet, rebound (of stock market etc), bounce, backlash, negative repercussions | 
| 反弹导弹 |    [ fǎn dàn daǒ dàn  ]    antimissile missile | 
| 反复 |    [ fǎn fù  ]    variant of 反覆|反复[fan3 fu4] | 
| 反恐战争 |    [ fǎn kǒng zhàn zhēng  ]    war on terrorism | 
| 反应 |    [ fǎn yìng  ]    to react, to respond, reaction, response, reply, chemical reaction, CL:個|个[ge4] | 
| 反应堆 |    [ fǎn yìng duī  ]    reactor | 
| 反应堆燃料元件 |    [ fǎn yìng duī rán yuán jiàn  ]    fuel element | 
| 反应堆芯 |    [ fǎn yìng duī xīn  ]    reactor core | 
| 反应式 |    [ fǎn yìng shì  ]    equation of a chemical reaction | 
| 反应时 |    [ fǎn yìng shí  ]    response time | 
| 反应时间 |    [ fǎn yìng shí jiān  ]    response time (technology) | 
| 反应炉 |    [ fǎn yìng lú  ]    (nuclear etc) reactor | 
| 反应锅 |    [ fǎn yìng guō  ]    reaction pot (chemical engineering), cauldron (at Hogwarts 霍格沃茨) | 
| 反战 |    [ fǎn zhàn  ]    anti-war | 
| 反战抗议 |    [ fǎn zhàn kàng yì  ]    antiwar protest | 
| 反批评 |    [ fǎn pī píng  ]    countercriticism | 
| 反扑 |    [ fǎn pū  ]    to counterattack, to come back after a defeat, to retrieve lost ground | 
| 反击 |    [ fǎn jī  ]    to strike back, to beat back, to counterattack | 
| 反败为胜 |    [ fǎn baì weí shèng  ]    to turn defeat into victory (idiom); to turn the tide | 
| 反斜线 |    [ fǎn xié xiàn  ]    backslash (computing), reversed diagonal | 
| 反映论 |    [ fǎn yìng lùn  ]    theory of reflection (in dialectic materialism), i.e. every perception reflects physical reality | 
| 反时势 |    [ fǎn shí shì  ]    unconventional | 
| 反时针 |    [ fǎn shí zhēn  ]    counterclockwise | 
| 反智主义 |    [ fǎn zhì zhǔ yì  ]    anti-intellectualism | 
| 反智论 |    [ fǎn zhì lùn  ]    anti-intellectualism | 
| 反杜林论 |    [ fǎn dù lín lùn  ]    Anti-Dühring, book by Friedrich Engels 恩格斯[En1 ge2 si1] | 
| 反正一样 |    [ fǎn zhèng yī yàng  ]    whether it's right or wrong doesn't make a lot of difference, six of one and half a dozen of the other, as broad as it is long | 
| 反杀 |    [ fǎn shā  ]    to respond to an assault by killing one's assailant | 
| 反气旋 |    [ fǎn qì xuán  ]    anticyclone | 
| 反求诸己 |    [ fǎn qiú zhū jǐ  ]    to seek the cause in oneself rather than sb else | 
| 反渗透 |    [ fǎn shèn toù  ]    anti-infiltration (measures taken against subversive external forces), (chemistry) reverse osmosis | 
| 反渗透法 |    [ fǎn shèn toù fǎ  ]    (Tw) Anti-infiltration Act (2020), which regulates the influence of entities deemed foreign hostile forces | 
| 反潜 |    [ fǎn qián  ]    anti-submarine, antisubmarine | 
| 反物质 |    [ fǎn wù zhì  ]    antimatter | 
| 反犹太主义 |    [ fǎn yoú taì zhǔ yì  ]    antisemitism | 
| 反璞归真 |    [ fǎn pú guī zhēn  ]    variant of 返璞歸真|返璞归真[fan3 pu2 gui1 zhen1] | 
| 反生物战 |    [ fǎn shēng wù zhàn  ]    biological (warfare) defense | 
| 反用换流器 |    [ fǎn yòng huàn liú qì  ]    inverter, device that converts AC electricity to DC and vice versa | 
| 反知识 |    [ fǎn zhī shi  ]    anti-intellectual | 
| 反社会 |    [ fǎn shè huì  ]    antisocial (behavior) | 
| 反社会行为 |    [ fǎn shè huì xíng weí  ]    antisocial behavior | 
| 反科学 |    [ fǎn kē xué  ]    anti-science, anti-scientific | 
| 反义 |    [ fǎn yì  ]    antonymous, (genetic) antisense | 
| 反义字 |    [ fǎn yì zì  ]    character with opposite meaning, antonym, opposite characters | 
| 反义词 |    [ fǎn yì cí  ]    antonym | 
| 反习 |    [ fǎn xí  ]    anti-Xi (Jinping) | 
| 反圣婴 |    [ fǎn shèng yīng  ]    La Niña (counterpart of El Niño in meteorology) | 
| 反腐败 |    [ fǎn fǔ baì  ]    to oppose corruption, anti-graft (measures, policy etc) | 
| 反脸无情 |    [ fǎn liǎn wú qíng  ]    to turn one's face against sb and show no mercy (idiom); to turn against a friend | 
| 反兴奋剂 |    [ fǎn xīng fèn jì  ]    anti-doping, anti-stimulant, policy against drugs in sports | 
| 反舰导弹 |    [ fǎn jiàn daǒ dàn  ]    anti-ship missile | 
| 反舰艇 |    [ fǎn jiàn tǐng  ]    anti-ship | 
| 反舰艇巡航导弹 |    [ fǎn jiàn tǐng xún háng daǒ dàn  ]    anti-ship cruise missile | 
| 反刍 |    [ fǎn chú  ]    to ruminate, to chew the cud | 
| 反刍动物 |    [ fǎn chú dòng wù  ]    ruminant | 
| 反华 |    [ fǎn huá  ]    anti-Chinese | 
| 反冲 |    [ fǎn chōng  ]    recoil (of a gun), to bounce back, backlash | 
| 反冲力 |    [ fǎn chōng lì  ]    backlash, recoil, reactive force | 
| 反袁运动 |    [ fǎn yuán yùn dòng  ]    anti-Yuan movement, opposing Yuan Shikai 袁世凱|袁世凯[Yuan2 Shi4 kai3] in National Protection War 護國戰爭|护国战争[Hu4 guo2 Zhan4 zheng1] 1915-1916, same as 反袁鬥爭|反袁斗争[fan3 Yuan2 dou4 zheng1] | 
| 反袁斗争 |    [ fǎn yuán doù zhēng  ]    war of 1915 against Yuan Shikai and for the Republic | 
| 反裘负刍 |    [ fǎn qiú fù chú  ]    lit. to wear one's coat inside out and carry firewood on one's back (idiom), fig. to live a life of poverty and hard work, fig. to act stupidly | 
| 反复 |    [ fǎn fù  ]    repeatedly, over and over, to upend, unstable, to come and go, (of an illness) to return | 
| 反复无常 |    [ fǎn fù wú cháng  ]    unstable, erratic, changeable, fickle | 
| 反观 |    [ fǎn guān  ]    by contrast, but as for this..., viewed from another angle, subjectively, introspection | 
| 反诉 |    [ fǎn sù  ]    counterclaim, countercharge (law) | 
| 反诉状 |    [ fǎn sù zhuàng  ]    counterclaim | 
| 反诗 |    [ fǎn shī  ]    verse criticizing officials, satirical verse | 
| 反诘 |    [ fǎn jié  ]    to ask (a question) in reply, to answer a question with a question, rhetorical question | 
| 反诘问 |    [ fǎn jié wèn  ]    to cross-examine | 
| 反话 |    [ fǎn huà  ]    irony, ironic remark | 
| 反语 |    [ fǎn yǔ  ]    irony | 
| 反语法 |    [ fǎn yǔ fǎ  ]    irony | 
| 反诬 |    [ fǎn wū  ]    to make a false countercharge | 
| 反讽 |    [ fǎn fěng  ]    irony, to satirize | 
| 反证 |    [ fǎn zhèng  ]    disproof, rebuttal, reductio ad absurdum | 
| 反证法 |    [ fǎn zhèng fǎ  ]    reductio ad absurdum | 
| 反贪 |    [ fǎn tān  ]    anti-corruption (policy) | 
| 反贪污 |    [ fǎn tān wū  ]    anticorruption | 
| 反贪腐 |    [ fǎn tān fǔ  ]    anti-corruption | 
| 反身代词 |    [ fǎn shēn daì cí  ]    reflexive pronoun | 
| 反躬自问 |    [ fǎn gōng zì wèn  ]    introspection, to ask oneself | 
| 反转 |    [ fǎn zhuǎn  ]    reversal, inversion, to reverse, to invert (upside down, inside out, back to front, white to black etc) | 
| 反转录 |    [ fǎn zhuǎn lù  ]    (molecular biology) reverse transcription | 
| 反转录病毒 |    [ fǎn zhuǎn lù bìng dú  ]    retrovirus | 
| 反过来 |    [ fǎn guo laí  ]    conversely, in reverse order, in an opposite direction | 
| 反过来说 |    [ fǎn guò laí shuō  ]    on the other hand | 
| 反酷刑折磨公约 |    [ fǎn kù xíng zhé mó gōng yuē  ]    UN convention against torture and cruel treatment (ratified by PRC in 1988) | 
| 反锯齿 |    [ fǎn jù chǐ  ]    anti-aliasing | 
| 反录病毒 |    [ fǎn lù bìng dú  ]    reverse transcription virus, retrovirus | 
| 反锁 |    [ fǎn suǒ  ]    locked in (with the door locked from the outside) | 
| 反铲 |    [ fǎn chǎn  ]    backhoe | 
| 反间 |    [ fǎn jiàn  ]    to feed the enemy misinformation through their own spies, to sow discord in the enemy camp | 
| 反间计 |    [ fǎn jiàn jì  ]    stratagem of sowing dissension, CL:條|条[tiao2] | 
| 反间谍 |    [ fǎn jiàn dié  ]    counterintelligence, protection against espionage | 
| 反电子 |    [ fǎn diàn zǐ  ]    positron, also called 正電子|正电子[zheng4 dian4 zi3] | 
| 反面儿 |    [ fǎn miàn  ]    erhua variant of 反面[fan3 mian4] | 
| 反面教员 |    [ fǎn miàn yuán  ]    (PRC) teacher by negative example, sb from whom one can learn what not to do | 
| 反革命宣传煽动罪 |    [ fǎn gé mìng xuān chuán shān dòng zuì  ]    the crime of instigating counterrevolutionary propaganda | 
| 反响 |    [ fǎn xiǎng  ]    repercussions, reaction, echo | 
| 反顾 |    [ fǎn gù  ]    to glance back, fig. to regret, to have second thoughts about sth | 
| 反馈 |    [ fǎn kuì  ]    to send back information, feedback | 
| 反驳 |    [ fǎn bó  ]    to retort, to refute | 
| 反党 |    [ fǎn dǎng  ]    anti-party | 
| ⇒ 一反常态 |    [ yī fǎn cháng taì  ]    complete change from the normal state (idiom); quite uncharacteristic, entirely outside the norm, out of character | 
| ⇒ 三反运动 |    [ sān fǎn yùn dòng  ]    "Three Anti" campaign (anti-corruption, anti-waste, anti-bureaucracy), early PRC purge of 1951-52 | 
| ⇒ 偶联反应 |    [ oǔ lián fǎn yìng  ]    chain reaction (chemistry) | 
| ⇒ 免疫反应 |    [ miǎn yì fǎn yìng  ]    immune response | 
| ⇒ 出尔反尔 |    [ chū ěr fǎn ěr  ]    old: to reap the consequences of one's words (idiom, from Mencius); modern: to go back on one's word, to blow hot and cold, to contradict oneself, inconsistent | 
| ⇒ 动力反应堆 |    [ dòng lì fǎn yìng duī  ]    power reactor | 
| ⇒ 化学反应 |    [ huà xué fǎn yìng  ]    chemical reaction | 
| ⇒ 原子反应堆 |    [ yuán zǐ fǎn yìng duī  ]    atomic reactor | 
| ⇒ 反反复复 |    [ fǎn fǎn fù fù  ]    repeatedly, time and time again | 
| ⇒ 同义反复 |    [ tóng yì fǎn fù  ]    tautology | 
| ⇒ 唱反调 |    [ chàng fǎn  ]    to express a different view, to take a different position | 
| ⇒ 单反机 |    [ dān fǎn jī  ]    see 單反相機|单反相机[dan1 fan3 xiang4 ji1] | 
| ⇒ 单反相机 |    [ dān fǎn xiàng jī  ]    single-lens reflex camera (SLR) | 
| ⇒ 单镜反光相机 |    [ dān jìng fǎn guāng xiàng jī  ]    single-lens reflex camera (SLR) | 
| ⇒ 四一二反革命政变 |    [ sì yī èr fǎn gé mìng zhèng biàn  ]    counterrevolutionary coup of 12th April 1927, Chiang Kai-shek's coup against the communists in Shanghai | 
| ⇒ 报本反始 |    [ baò běn fǎn shǐ  ]    ensure that you pay debts of gratitude (idiom) | 
| ⇒ 增殖反应堆 |    [ zēng zhí fǎn yìng duī  ]    breeder reactor | 
| ⇒ 强烈反对 |    [ qiáng liè fǎn duì  ]    to oppose strongly, violently opposed to | 
| ⇒ 复分解反应 |    [ fù fēn jiě fǎn yìng  ]    metathesis (chemistry) | 
| ⇒ 应激反应 |    [ yìng jī fǎn yìng  ]    (physiological etc) stress | 
| ⇒ 拨乱反正 |    [ bō luàn fǎn zhèng  ]    bring order out of chaos, set to rights things which have been thrown into disorder | 
| ⇒ 放热反应 |    [ fàng rè fǎn yìng  ]    exothermic reaction | 
| ⇒ 易于反掌 |    [ yì yú fǎn zhǎng  ]    see 易如反掌[yi4 ru2 fan3 zhang3] | 
| ⇒ 核反应 |    [ hé fǎn yìng  ]    nuclear reaction | 
| ⇒ 核反应堆 |    [ hé fǎn yìng duī  ]    nuclear reactor | 
| ⇒ 核反击 |    [ hé fǎn jī  ]    nuclear counter strike | 
| ⇒ 核连锁反应 |    [ hé lián suǒ fǎn yìng  ]    nuclear chain reaction | 
| ⇒ 条件反射 |    [ jiàn fǎn shè  ]    conditioned reflex | 
| ⇒ 条件反应 |    [ jiàn fǎn yìng  ]    conditioned response | 
| ⇒ 机关算尽太聪明,反算了卿卿性命 |    [ jī guān suàn jìn taì cōng ming fǎn suàn le qīng qīng xìng mìng  ]    if one is too calculating, it will be the cause of one's own undoing (famous line in "A Dream of Red Mansions" 紅樓夢|红楼梦[Hong2 lou2 Meng4]) | 
| ⇒ 欲益反损 |    [ yù yì fǎn sǔn  ]    wishing for profit, but causing loss (idiom); good intentions that lead to disaster, It all ends in tears. | 
| ⇒ 正反两面 |    [ zhèng fǎn liǎng miàn  ]    two-way, reversible, both sides of the coin | 
| ⇒ 气冷式反应堆 |    [ qì lěng shì fǎn yìng duī  ]    gas-cooled reactor | 
| ⇒ 炎性反应 |    [ yán xìng fǎn yìng  ]    inflammation response | 
| ⇒ 热核反应堆 |    [ rè hé fǎn yìng duī  ]    thermal reactor | 
| ⇒ 热核聚变反应 |    [ rè hé jù biàn fǎn yìng  ]    thermonuclear fusion reaction | 
| ⇒ 物极必反 |    [ wù jí bì fǎn  ]    when things reach an extreme, they can only move in the opposite direction (idiom) | 
| ⇒ 生物反应器 |    [ shēng wù fǎn yìng qì  ]    bioreactor | 
| ⇒ 生产反应堆 |    [ shēng chǎn fǎn yìng duī  ]    production reactor | 
| ⇒ 画虎不成反类犬 |    [ huà hǔ bù chéng fǎn leì quǎn  ]    to try to draw a tiger but end up with a likeness of a dog (idiom), to try to do sth overambitious and end up botching it | 
| ⇒ 知识越多越反动 |    [ zhī shi yuè duō yuè fǎn dòng  ]    the more knowledgeable, the more reactionary (absurd anti-intellectual slogan attributed after the event to the Gang of Four 四人幫|四人帮[Si4 ren2 bang1]) | 
| ⇒ 研究反应堆 |    [ yán jiū fǎn yìng duī  ]    research reactor | 
| ⇒ 积极反应 |    [ jī jí fǎn yìng  ]    active response, energetic response | 
| ⇒ 窝里反 |    [ wō li fǎn  ]    see 窩裡鬥|窝里斗[wo1 li5 dou4] | 
| ⇒ 义无反顾 |    [ yì wú fǎn gù  ]    honor does not allow one to glance back (idiom); duty-bound not to turn back, no surrender, to pursue justice with no second thoughts | 
| ⇒ 老子英雄儿好汉,老子反动儿混蛋 |    [ laǒ zi yīng xióng ér haǒ hàn laǒ zi fǎn dòng ér hún dàn  ]    If the father is a hero, the son is a real man. If the father is a reactionary, the son is a bastard. (Cultural Revolution slogan), fig. like father, like son | 
| ⇒ 聚变反应 |    [ jù biàn fǎn yìng  ]    nuclear fusion | 
| ⇒ 聪明反被聪明误 |    [ cōng míng fǎn beì cōng míng wù  ]    a clever person may become the victim of his own ingenuity (idiom); cleverness may overreach itself, too smart for one's own good | 
| ⇒ 肃反 |    [ sù fǎn  ]    to eliminate counterrevolutionaries (abbr. for 肅清反革命分子|肃清反革命分子[su4 qing1 fan3 ge2 ming4 fen4 zi3]) | 
| ⇒ 肃反运动 |    [ sù fǎn yùn dòng  ]    purge of counterrevolutionaries (esp. Mao's purge of hidden counterrevolutionaries 1955-56 and Stalin's Great Purge 1936-38) | 
| ⇒ 举一反三 |    [ jǔ yī fǎn sān  ]    to raise one and infer three, to deduce many things from one case (idiom) | 
| ⇒ 角弓反张 |    [ gōng fǎn zhāng  ]    opitoshtonous (med.), muscular spasm of the body associated with tetanus and meningitis | 
| ⇒ 谋反 |    [ moú fǎn  ]    to plot a rebellion, to conspire against the state | 
| ⇒ 变态反应 |    [ biàn taì fǎn yìng  ]    allergic response, allergy | 
| ⇒ 负反馈 |    [ fù fǎn kuì  ]    negative feedback | 
| ⇒ 超敏反应 |    [ chaō mǐn fǎn yìng  ]    hypersensitivity | 
| ⇒ 轻水反应堆 |    [ qīng shuǐ fǎn yìng duī  ]    light water reactor (LWR) | 
| ⇒ 辗转反侧 |    [ zhǎn zhuǎn fǎn cè  ]    to toss and turn restlessly (in the bed) | 
| ⇒ 逆反应 |    [ nì fǎn yìng  ]    reverse reaction, counterreaction, inverse response | 
| ⇒ 连锁反应 |    [ lián suǒ fǎn yìng  ]    chain reaction | 
| ⇒ 过敏反应 |    [ guò mǐn fǎn yìng  ]    allergic reaction | 
| ⇒ 过敏性反应 |    [ guò mǐn xìng fǎn yìng  ]    allergic reaction, hypersensitive reaction, anaphylaxis | 
| ⇒ 违反 |    [ weí fǎn  ]    to violate (a law) | 
| ⇒ 违反宪法 |    [ weí fǎn xiàn fǎ  ]    to violate the constitution | 
| ⇒ 适得其反 |    [ shì dé qí fǎn  ]    to produce the opposite of the desired result | 
| ⇒ 重水反应堆 |    [ zhòng shuǐ fǎn yìng duī  ]    heavy water reactor (HWR) | 
| ⇒ 镇反运动 |    [ zhèn fǎn yùn dòng  ]    Campaign to Suppress Counterrevolutionaries (PRC political campaign from 1950-1952), abbr. for 鎮壓反革命運動|镇压反革命运动[Zhen4 ya1 Fan3 ge2 ming4 Yun4 dong4] | 
| ⇒ 镇压反革命运动 |    [ zhèn yā fǎn gé mìng yùn dòng  ]    Campaign to Suppress Counterrevolutionaries (PRC political campaign from 1950-1952), abbr. to 鎮反運動|镇反运动[Zhen4 fan3 Yun4 dong4] | 
| ⇒ 链式反应 |    [ liàn shì fǎn yìng  ]    chain reaction | 
| ⇒ 链式裂变反应 |    [ liàn shì liè biàn fǎn yìng  ]    chain reaction of nuclear fission | 
| ⇒ 非条件反射 |    [ feī jiàn fǎn shè  ]    unconditioned reflex (physiology) | 
| ⇒ 高原反应 |    [ gaō yuán fǎn yìng  ]    altitude sickness, acute mountain sickness, abbr. to 高反[gao1 fan3] |