Undercrowding
欠拥挤度, 过疏
🗣️ 情景例句
Can I use your car for a couple of hours?
我们能借你的车用几个小时吗？
That's OK.
没关系。
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，