Polycarboxylic
[机] 多羧酸的
🗣️ 情景例句
Which subject were you best interested in?
你对哪一科最有兴趣？
What's your nationality? Are you an American.
你的国籍是什么？你是美国人？
You couldn't use them again.
你不可能再次使用这些木板。