Bipropargyl
联丙炔
🗣️ 情景例句
They don't ask how much someone paid for something.
他们不问别人买某个东西要花多少钱。
Mrs.Smith, I'd like to introduce a friend of mine, Pierre Dubois.
史密斯太太，我来介绍一下我的朋友皮埃尔=杜布斯。
Congratulations on your good news! You must have done well to have achieved this success.
对你的好消息表示祝贺。你一定是干得很出色才获得这一成功的。