Difluorodibromomethane
二氟二溴甲烷
🗣️ 情景例句
You really must have your wits about your when dealing with such people.
跟这类人打交道，你必须格外警觉。
It is harder to marry a daughter well than to bring her up well.
养女容易嫁女难。
How do you do?
你好。