nitpicking

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Worries of this nature are not mere nitpicking.
然而这样的担心不纯粹是吹毛求疵。
This may seem like nitpicking in some cases, but those policies and conventions were presumably established for a good reason, so they should be upheld.
有些时候这样做显得吹毛求疵，但是定下这些规定和规范是有缘由的，所以应该遵守。
It’s a tough thing for any internal product or engineering team to face – the thought of an external group nitpicking apart their gem, but it’s worth it.
想到一个外部企业对自己的珍品吹毛求疵，每一个内部产品和工程团队都很难面对，但这样做是值得的。

And yes, this is important, very much so, it is not just trivial nitpicking.
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giving too much attention to details that are not important, especially as a way of criticizing

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.