Polyanhydride
[化] 聚酐
🗣️ 情景例句
There are thirty-three thousand three hundred and thirty-three feathers on that bird's throat.
那只画眉鸟的喉咙上有三万三千三百三十片羽毛。
A work ill done must be twice done.
未做好的活，需要重新做。
We were in a better position than they were.
我们的处境比他们要好。