Monosulphide
一硫化物
🗣️ 情景例句
Mr. Malcolm Stewart, and it looks like a personal letter.
Malcolm Stewart先生收 ，而且看来是一封私人信件。
I'm sorry to interrupt, but I'd like you to explain that a little more.
很抱歉，我插个嘴，我希望你多解释一些。
What's the weather like?
天气怎么样？