Perchlorethane
[化] 全氯乙烷
🗣️ 情景例句
May I speak to the head of the household?
我可以请户主听电话吗？
The flight number is ak708 on september 5th.
班机号码是9月5日ak708
It is, in fact, a primitive type of calendar.
事实上是一种最原始的日历。