nitpicking

1. N-UNCOUNT If you refer to someone's opinion as nitpicking, you disapprove of the fact that it concentrates on small and unimportant details, especially to try and find fault with something. 挑刺兒; 找茬[表不滿]

A lot of nit-picking was going on about irrelevant things. 對不相乾的事情一直大肆吹毛求疵。

I can get down to nitpicking detail, I am pretty fussy about certain things. 我會挑剔細節，而且對某些事情我會相儅吹毛求疵。