Obsoleteness
废弃
✅ 同义词
🗣️ 情景例句
Well, first, you have to turn your hat around like this.
首先 ，你得把你的帽子转一下 ，像这样。
Which one is cheaper?
哪一个是较便宜的？
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，