Perchlorethane
[化] 全氯乙烷
🗣️ 情景例句
I know,
我知道，
It's no trouble at all. I'll carry this suitcase for you.
一点也不麻烦，我来替你提这只箱子。
I had an amusing experience last year.
去年我有过一次有趣的经历。