Dcf
[医] 直接离心浮选[法]
🗣️ 情景例句
I expect that I will be back on Sunday.
我预计星期日回来。
I'm washing the car in the garage.
我在车房洗车。
I'm just calling to introduce myself. My name is Tang.
我打电话是向您作自我介绍，我姓唐。