Aquaseal
密封剂
🗣️ 情景例句
Why don't we take a walk down to the river?
我们何不一路散步到河边去呢？
I'm waiting for you outside.
我在外面等你。
It is only in the study of man himself that the major social sciences have substituted the study of one local variation, that of Western civilization.
只是在对人类自身的研究中，各主要的社会学科才用对一个局部地区各种情况的研究（如对西方文明的研究）来代替对全人类的研究。