Phthalhydrazide
邻苯二甲酰肼
🗣️ 情景例句
Thank you.
谢谢你。
We invited two guests to dinner,but they didn't come.
我们邀请了2个客人去吃晚饭，但是他们没来。
OK! What time shall we leave?
好的！我们什么时候出发？