Fluorohydrocarbon
[化] 氟代烃
🗣️ 情景例句
The student has a very wide range of interests.
那个学生的兴趣非常广泛。
They had to call in a heart specialist.
他不得不请一位心脏病专家。
I'm calling about mistake on our last invoice.
我打电话来，是因为上回的发票有错。