Copolyimide
共聚多酰胺
🗣️ 情景例句
I had a busy day. I'm done.
我今天很忙，现在精疲力尽。
You cannot make a silk purse out of a sow's ear.
猪耳朵做不成丝钱包；巧妇难为无米之炊。
They had a good time, but I didn't go.
他们玩得很痛快，但我没有去。