Polyhydrazide
[化] 聚酰肼
🗣️ 情景例句
He was left in charge of the shop while the manager was away.
经理不在时他负责这个商店。
A rolling stone gathers no moss.
滚石不生苔，转业不聚财。
We were both lucky. I think she is a hero too!
我们俩都很走运。我认为她也是个英雄。