Polychlorinated
[医]多氯化的
🗣️ 情景例句
I hope he's in a good mood.
我希望他心情不错。
Do you happen to know Mr. Cooper's telephone number?
你知道库珀先生的电话号码吗？
I'm glad our negotiation has come to a successful conclusion.
我很高兴这次洽谈圆满成功。