cover的例句

例句：

Get everything in writing in order to cover your back.

一切都要立字為據，以絕後患。

Water covers a large proportion of the earth's surface.

水覆蓋了地球表面的`大部分。

The book aims to cover all aspects of city life.

這本書旨在涵蓋城市生活的各個方面。