cover

盖子, 封面, 藉口

the act of concealing the existence of something by obstructing the view of it; fire that makes it difficult for the enemy to fire on your own individuals or formations; a recording of a song that was first recorded or made popular by somebody else; a false identity and background (especially one created for an undercover agent)

覆盖, 掩饰, 保护, 掩护, 包括

覆盖

补位