Hydrofluoric efher
[化] 氟代烃
🧩 词语组成解析
a. 氢氟酸的
🗣️ 情景例句
Favorably?
是好评
Billy, get off the doggie's tail.
比利，得扰人处且饶人，放他一马吧。
That's not allowed. Once you are in here, listen to your teacher.
那是不允许的。一旦进来了，你们要听老师的话。