Tetrafluoromethane
[化] 四氟化碳
🗣️ 情景例句
It's a surprise.
会给你一个惊喜。
I beg your pardon?
对不起，请再说一遍。
The conference was very well organized. Everything began and finished on time.
会议安排的很好。开始和结束都准时。