Chlorethanol
[建] 氯乙素
??? 情景例句
I think aerobics is easy.
我覺得有氧運(yùn)動(dòng)很容易。
We never know the worth (or value) of water till the well is dry.
井枯方知水可貴。
The children were leaving school on Tuesday when they saw a truck.
星期二，孩子們正放學(xué)回家，這時(shí)，他們看見一輛卡車。