Fluorocarbon
[建] 碳氟化合物
🗣️ 情景例句
Well, Mrs. Herrera,
好，Herrera太太
A person must strain one's ears to hear a wild animal in the forest.
在森林里，人类必须对野兽竖起耳朵才行。
Sorry, sorry, Polly says sorry!
对不起。