Polymers
n. 聚合物；高分子（polymer的復(fù)數(shù)）
??? 情景例句
I don't know what you are driving at.
我不知道你到底想說什么。
He knocks boldly at the door who brings good news.
彼叩門聲響，必來報(bào)佳音。
tap water that is too hot to touch can be left to cool and is generally safe to drink.
水管中流出的燙手的水可以留下來冷卻。這種水一般是安全的。