Polyfluocarbon
[化] 多氟烃
🗣️ 情景例句
Many business people turn off their pagers and cell phones during their leisure time.
许多商人在他们的休息时间里都把传呼机和移动电话关掉。
I had a hamburger and a fried chicken leg?
我吃一个汉堡包，一个炸鸡腿。
You'd better finish the work today, and bring it tomorrow.
你最好今天完成这作业，明天把它带来。