Difluorinated
二氟化的
🗣️ 情景例句
Well, thank you.
好，谢谢。
I must play my spare time well, or I end up doing nothing.
我必须善于利用空闲的时间，否则生命将会在无所事事中告终。
A woman saw it happen when she was walking past.
一位妇女走过的时候，看到我的钢笔掉了。