Acetylchloride
乙酰氯
??? 情景例句
I've been thinking about it for weeks now.
為這事我想了幾個星期。
I hope my visit does not cause you too much trouble.
我希望這次來參觀沒有給你們增添太多的麻煩。
Hi, Sam! How are you today?
嗨，山姆！你今天好嗎？