the odd one out
US /ðɪ ˌɑːd wʌn ˈaʊt/
UK /ðɪ ˌɑːd wʌn ˈaʊt/
1.
异类, 例外, 与众不同的人
a person or thing that is different from or excluded from others in a group or series
:
•
In this group of fruits, the apple is the odd one out because all the others are berries.
在这组水果中，苹果是异类，因为所有其他都是浆果。
•
He always felt like the odd one out in his family because he was the only artist.
他总觉得自己是家里的异类，因为他是唯一的艺术家。