cover是英语单词，词性为动词和名词，意为“遮盖，掩蔽，涉及，包含，洒土；覆盖物，避难所，掩护，封面”。
例句：
The paint will cover any irregularity in the surface of the walls.
油漆会遮盖住墙壁上任何不平整的地方。
She covered the food with a piece of cloth.
她用布把食物遮盖起来。
Get everything in writing in order to cover your back.
一切都要立字为据，以绝后患。
Water covers a large proportion of the earth's surface.
水覆盖了地球表面的大部分。
The book aims to cover all aspects of city life.
这本书旨在涵盖城市生活的各个方面。