grab bag
noun/ˈɡræb bæɡ/
/ˈɡræb bæɡ/
(North American English)- (British English lucky dip)a game in which people choose a present from a container of presents without being able to see what it is going to be
摸彩游戏 - (informal) a mixed collection of things
（各种事物的）混杂，聚合 - He offered a grab bag of reasons for his decision.
他为自己所作的决定提出了各种理由。
- He offered a grab bag of reasons for his decision.