Defluorination
[化] 脱氟作用
🗣️ 情景例句
It's time we hired a secretary to answer the phones.
我们早就该请一个秘书接听电话了。
Kind words are the music of the world.
善言是世上的音乐。
When the news got round that a comedy show would be presented at our local cinema by the P.and U.Bird Seed Company,
当“皮尤”鸟食公司将在我们当地影院演出喜剧节目的消息传开后，