Fluorocarbon
[建] 碳氟化合物
🗣️ 情景例句
I put them in the pocket of my sports jacket.
我把它们放在我运动夹克的口袋里。
I wrote novels yesterday.
我昨天在写小说。
A week later, Mr Brain rang Zheng Jie and spoke to a friend of his.
一周以后，布雷恩先生打电话给郑杰，接电话的是郑杰的一位朋友。