Pentachloroethane
五氯乙烷
🗣️ 情景例句
Can I borrow your notes to study for the exams?
快考试了，我能借你的笔记看看吗？
If you work in a factory,you usually have to punch a clock.
如果你在一个工厂里工作，你通常必须打卡。
You will not have to spend the next few days recovering from a long and arduous journey.
用不着因为漫长的旅途的辛苦而花几天时间休息来恢复精神。