Polyacetals
聚缩醛(树脂)
🗣️ 情景例句
Let's go to see a show.
我们一起去看场电影吧。
All is fish that comes to his net.
到了网中都是鱼；只要到手全都要。
Yesterday, a pigeon carried the first message from Pinhurst to Silbury.
昨天，一只鸽子把第一封信从平赫特带到锡尔伯里。