Aithioic acid
[机] 二硫羧酸
🧩 词语组成解析
🗣️ 情景例句
you'll help me select some of the great places.
能帮我挑一些好地方。
We have mainly adopted some usual international practices.
我们主要采取了一些国际上的惯例做法。
The lady who is standing behind the counter.
站在柜台后面的那位女士。