Monosulphide
一硫化物
🗣️ 情景例句
If you cannot make a counter offer, then I'm afraid we can't make a deal.
如果你不还价的话，恐怕我们无法交易。
The proof of the pudding is in the eating.
空谈不如实验。（实践出真知）
Yes. There are two.
是的，有两个。