Pentachloroethane
五氯乙烷
🗣️ 情景例句
Weren't they going to be here this morning?
他们不是今天早上要来这儿吗？
No. You should have taken the Yellow Line bus. You can get one at the next stop.
不是。你该乘黄线车才是。到下一站你可以搭上。
London is on the river Thames.
伦敦位于泰吾士河边。