cover是英語單詞，詞性為動詞和名詞，意為“遮蓋，掩蔽，涉及，包含，灑土；覆蓋物，避難所，掩護，封面”。
例句：
The paint will cover any irregularity in the surface of the walls.
油漆會遮蓋住墻壁上任何不平整的地方。
She covered the food with a piece of cloth.
她用布把食物遮蓋起來。
Get everything in writing in order to cover your back.
一切都要立字為據(jù)，以絕后患。
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。