Paroxypropiophenone
对羟基苯丙酮
🗣️ 情景例句
What is it?
那是什么？
I remember the girl whose father goes there every winter.
我记得那个女孩的父亲每年冬天都去那里。
I got up early and bought thirty-seven cards.
我早早起了床，买来了37张明信片。