N-UNCOUNT 挑剔;(尤指)吹毛求疵 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. 挑剔;(尤指)吹毛求疵 [disapproval]
A lot of nit-picking was going on about irrelevant things.
对于毫不相干的事情进行大量吹毛求疵的批评。
I can get down to nitpicking detail, I am pretty fussy about certain things.