Perchloroethane
六氯乙烷
🗣️ 情景例句
I'm surprised they're not here.
我奇怪他们怎么没来。
He who laughs at crooked men should need walk very straight.
正人先正己。
Wu dropped his stick! He stopped to get it and of course fell behind.
吴的接力棒掉地了！他停下捡棒，当然就落后了。