Pentachloroethane
五氯乙烷
🗣️ 情景例句
What's going on?
你在忙些什么？
If you always say NO,never be married.
常常说“不”字，永远难结婚。
She felt inhere handbag for the piece of paper on which her father had written down al the details of the journey and gave it to the porter.
她从钱包里摸出一张纸条，那上面有她父亲对这次旅行详细说明，她把这张纸条交给了搬运工。