Prestratigraphy
前地层学
🗣️ 情景例句
We rely on the Earth for everyting we need to survive, so let's take care of it.
我们依赖地球获取我们生存的一切东西，因此让我们来细心呵护它。
We'd like to hear what you say concerning the matter of packing.
我们很想听听你们在包装方面有什么意见。
It really takes time.
这样太耽误时间了。