二级
grade 2; second class; category B
耳机
headphones; earphones; telephone receiver
二级头呼吸器
(diving) regulator; demand valve
备用二级头呼吸器
backup regulator; octopus (diving)
光二极管
photodiode; light-emitting diode (LED)
吉尔吉斯族
Kyrgyz ethnic group; also written 柯爾克孜族|柯尔克孜族[Ke1 er3 ke4 zi1 zu2]
富拉尔基区
Fularji district of Qiqihar city 齊齊哈爾|齐齐哈尔[Qi2 qi2 ha1 er3], Heilongjiang
撒母耳记上
First book of Samuel
撒母耳记下
Second book of Samuel
发光二极管
light-emitting diode; LED
发光二极体
light-emitting diode (LED) (Tw)
第二季度
second quarter (of financial year)
阿尔及尔
Algiers, capital of Algeria
高尔基复合体
Golgi complex (in cell biology)
高尔机体
Golgi apparatus; also written 高爾基體|高尔基体[Gao1 er3 ji1 ti3]