Phthalhydrazide
邻苯二甲酰肼
🗣️ 情景例句
May I please speak to Mr. Kong?
我可以孔先生讲话吗？
I can't tell what will happen.
我可说不出将会发生什么事。
People are not so honest as they once were.
人们不再像以前那样诚实了。