Polyacetals
聚缩醛(树脂)
🗣️ 情景例句
That's music to my ears.
正合我意。
I asked him to play with me, but he wouldn't.
我请他和我玩，但是他不肯。
At night, when you really wish to go to sleep, you rarely manage to do so.
到了夜晚，你真想睡了，却很难入睡。