Caproaldehyde
[医] 己醛
🗣️ 情景例句
Come in, come in. Please, come in.
请进， 请进。请进来。
I know the boy whose father is a mailman.
我知道那个男孩的父亲是邮差。
What happened on the march then?
那么 ，在游行中发生了什么事？