Pentachloroethane
五氯乙烷
🗣️ 情景例句
We've only been here for a day,
我们到这里仅仅一天，
Where drums beat, laws are silent.
战鼓一打，法律无声。
I want to take some books to the classroom. Could you help me, please?
我想把一些书拿到教室里，你能帮个忙吗？