noun
cover
/'kʌvә/
cover 是什么意思
盖子，封面，藉口，覆盖
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).
词性
noun
难度
进阶
页面用途
检索复习