Fluorochemical
[机] 氟化物
🗣️ 情景例句
We finished addressing over three hundred envelopes.
我们写了三百多个信封地址了。
I've been part of this project since its beginning.
从一开始我就参与这个计划。
Will you help me fix up this sheet? Then it'll give us some shade.
帮我固定一下布单，好吗？这样可以给我们一些阴凉。