Grassers
[化] 犊牛皮
🗣️ 情景例句
I'm an exchange student.
我是一名交换学生。
Let's celebrate!
让我们好好庆祝一下吧!
it is quite reasonable to regard the sea floor as the basic form of the crust of the earth,
因此完全有理由把海床看作地壳的基本模壳，