Paac
[医][=polyallyl acetate]聚醋酸烯丙酯
🗣️ 情景例句
He'll be grouchy.
他会发牢骚的。
The comet will appear in the southern sky.
彗星出现在南方的天空。
Mr Hu stood at the starting line. All the runners got ready to run.
胡先生站在起跑线上。所有的运动员都做好了起跑准备。