Clophen
(多)氯化联苯
🗣️ 情景例句
Yes, Mr. Carlson. Yes, sir.
是的 ，Carlson先生。好， 先生。
What are you going to do now?
现在你要做什么？
Will you please try to find out for me what time the train arrives?
能不能请你帮我查查火车什么时候到？