Hydrofluoric efher
[化] 氟代烃
🧩 词语组成解析
a. 氢氟酸的
🗣️ 情景例句
I bet I can go one hour in your class this morning and not feel a thing!
我打赌我今天上午到的健身班运动一小时之后丝毫不累。
You look tired. Have you been getting enough sleep?
你似乎累了。睡眠充足吗？
There is a factory near No.14 Middle School.
第十四中学附近有一家工厂。