Polycarboxylic
[机] 多羧酸的
🗣️ 情景例句
I Wonder whether they will arrive on time.
我也不知道他能不能准时到。
He that has a full purse never wants a friend.
只要袋里有，不愁没朋友。
I'm sorry that you didn't get the job.
很遗憾，你没有得到那份工作。