一丝不苟
phrase C2- not one thread loose (idiom); strictly according to the rules
- meticulous
- not one hair out of place
From the library
老陆站起身来，舒展了一下酸痛的筋骨，开始一丝不苟地整理工作台上的工具，为明天的劳作做好准备。
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