Phthalhydrazide
邻苯二甲酰肼
🗣️ 情景例句
with Admissions at Columbia University.
与Columbia大学的招生人员。
I can't promise anything,but I'll do my best.
不敢保证，不过我尽力而为。
It's made of metal and wood.
是用金属和木材做的。