adenosine diphosphate (ADP)
二连巨盗龙 二連巨盜龍 èr lián jù dào lóng Gigantoraptor erlianensis (a giant bird-like dinosaur found in Erlian in Inner Mongolia)
1. binary code2. binary encoding
二项式系数 二項式係數 èr xiàng shì xì shù (math.) binomial coefficient
二项式定理 二項式定理 èr xiàng shì dìng lǐ the binomial theorem (math.)
光电二极管 光電二極管 guāng diàn èr jí guǎn photodiode
bombardment of Kinmen by PRC forces that started August 23rd 1958, also called the Second Taiwan Strait Crisis
Korean War (dating from North Korean invasion on 25th Jun 1950)
六二五战争 六二五戰爭 liù èr wǔ zhàn zhēng the Korean War (started June 25 1950)
1. the coup of 12th Mar 1927, an attempt by Chiang Kai-shek to suppress the communists2. called 反革命政变 or 惨案 in PRC literature
1. the massacre of 12th Mar 19272. the Shanghai coup of 12th Mar 1927 by Chiang Kai-shek against the communists
四十二章经 四十二章經 sì shí èr zhāng jīng The Sutra in Forty-two Sections Spoken by the Buddha, the first Chinese Buddhist text, translated in 67 AD by Kasyapa-Matanga 迦叶摩腾[jiā yè mó téng] and Gobharana 竺法兰[zhú fǎ lán] (Dharmaraksha)
(math.) least squares method
激光二极管 激光二極管 jī guāng èr jí guǎn laser diode
发光二极管 發光二極管 fā guāng èr jí guǎn 1. light-emitting diode2. LED
缠夹二先生 纏夾二先生 chán jiā èr xiān sheng annoying muddle-headed person who gabbles unintelligibly
disodium inosinate (E631)
鸟苷酸二钠 鳥苷酸二鈉 niǎo gān suān èr nà disodium guanylate (E627)
unfamiliar at first, but well accustomed soon enough (idiom)
1. lit. the mountain can't have two tigers (idiom)2. fig. this town ain't big enough for the two of us3. (of two rivals) to be fiercely competitive
二刻拍案惊奇 二刻拍案驚奇 èr kè pāi àn jīng qí Slapping the Table in Amazement (Part II), second of two books of vernacular stories by Ming dynasty novelist Ling Mengchu 凌蒙初[líng méng chū]
二氧化碳隔离 二氧化碳隔離 èr yǎng huà tàn gé lí 1. carbon sequestration2. carbon dioxide sequestration
二级头呼吸器 二級頭呼吸器 èr jí tóu hū xī qì (scuba diving) regulator; demand valve
第二型糖尿病 dì èr xíng táng niào bìng Type 2 diabetes
邻苯二甲酸酯 鄰苯二甲酸酯 lín běn èr jiǎ suān zhǐ phthalate (chemistry)
1. lit. either don't do it, or don't rest (idiom)2. fig. if you do it at all, you may as well go the whole hog3. in for a penny, in for a pound
一哭二闹三上吊 一哭二鬧三上吊 yī kū èr nào sān shàng diào 1. (lit.) to cry, then shout, then threaten suicide (saying)2. (fig.) to make a terrible scene; to throw a tantrum
1. lit. one is one, two is two (idiom)2. fig. things are (or ought to be) perfectly clear-cut3. unequivocal
二硫基丙磺酸钠 二硫基丙磺酸鈉 èr liú jī bǐng huáng suān nà sodium dimercaptosulfanate
二硫基琥珀酸钠 二硫基琥珀酸鈉 èr liú jī hǔ pò suān nà sodium dimercaptosuccinate
天冬苯丙二肽酯 tiān dōng běn bǐng èr tài zhǐ aspartame C14H18N2O (artificial sweetener)
第二次鸦片战争 第二次鴉片戰爭 dì èr cì yā piàn zhàn zhēng the Second Opium War (1856–1860)
管他三七二十一 guǎn tā sān qī èr shí yī 1. who cares2. no matter what3. regardless of the consequences
茄二十八星瓢虫 茄二十八星瓢蟲 qié èr shí bā xīng piáo chóng 1. 28-spotted ladybird2. hadda beetle3. Henosepilachna vigintioctopunctata
二氯异三聚氰酸钠 二氯異三聚氰酸鈉 èr lǜ yì sān jù qíng suān nà sodium dichloroisocyanurate
二氯苯胺苯乙酸钠 二氯苯胺苯乙酸鈉 èr lǜ běn àn běn yǐ suān nà 1. diclofenac sodium (non-steroidal anti-inflammatory drug used to reduce swelling and as painkiller)2. also called voltaren 扶他林
备用二级头呼吸器 備用二級頭呼吸器 bèi yòng èr jí tóu hū xī qì (scuba diving) backup regulator; octopus
四一二反革命政变 四一二反革命政變 sì yī èr fǎn gé mìng zhèng biàn counterrevolutionary coup of 12th April 1927, Chiang Kai-shek's coup against the communists in Shanghai
黄花岗七十二烈士 黃花崗七十二烈士 huáng huā gāng qī shí èr liè shì the seventy two martyrs of the Huanghuagang uprising of 23rd April 1911
二十年目睹之怪现状 二十年目睹之怪現狀 èr shí nián mù dǔ zhī guài xiàn zhuàng The Strange State of the World Witnessed Over 20 Years, novel by late Qing novelist Wu Jianren 吴趼人[wú jiǎn rén]
北京第二外国语学院 北京第二外國語學院 běi jīng dì èr wài guó yǔ xué yuàn Beijing International Studies University (BISU)
只知其一，不知其二 zhǐ zhī qí yī , bù zhī qí èr to know the first, but not know the second (idiom); only partial information
有一说一，有二说二 有一說一，有二說二 yǒu yī shuō yī , yǒu èr shuō èr to call sth as it is (idiom)
第二次汉字简化方案 第二次漢字簡化方案 dì èr cì hàn zì jiǎn huà fāng àn Second Chinese Character Simplification Scheme (second round of simplified Chinese characters, proposed in 1977 and retracted in 1986)