tweener
noun /ˈtwiːnə(r)/
/ˈtwiːnər/
(informal)- (especially British English) (also tween, tweenager (British and North American English))a child between the ages of about 10 and 12
10 至 12 岁之间的少年 - (North American English) a person or thing that is between two categories, classes or age groups
介乎两者之间的人（或事物） - The film is a tweener, neither indie nor mainstream.
这部影片既非独立制作，也不属于主流，而是介于两者之间。 - These youngest baby boomers are a lost generation of tweeners.
这些最年轻的婴儿潮一代是失落的一代。
- The film is a tweener, neither indie nor mainstream.