Polyanhydride
[化] 聚酐
🗣️ 情景例句
He made up with his girlfriend.
他和女朋友和好了。
It won't fit; you'll have to go to the post office.
那不行，你必须去邮局才行。
What are you doing to do now,George?
你现在打算干什么，乔治？