Caproamide
[机] 己酸酐
🗣️ 情景例句
Usually a house is too expensive for the salary-earning class to buy.
通常房屋太贵，工薪阶层买不起。
What can I do for you?
我能为您做些什么？
The children compete against each other to reach the other end of the pool.
孩子们比赛看谁先到达游泳池的另一端。