Sikkim
n. 锡金（南亚国家）
🗣️ 情景例句
You've been a very helpful.
你帮了大忙。
What does it matter?
有什么关系？
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，