Citridic acid
[建] 乌头酸
🧩 词语组成解析
🗣️ 情景例句
This is a good deal: buy 1, get 1 free.
这可是个好买卖：买一送一。
How did you go?
你怎么走？
I've recently noticed that one of my work-mates is stealing.
我最近注意到，我的一个工友在行窃。