毫厘千里差之毫厘，谬以千里háo lí qiān lǐa miss is as good as a mile; an error the breadth of a single hair can lead you a thousand li astray
❍ 这是件大事，～，我们怎么能马虎了事？ This is a serious matter. A miss is as good as a mile. How can we get it done in a slapdash manner? 毫厘千里háo lí qiān lǐ指极小的差错或失误可造成大的错误。a warning against carelessness, a miss is as good as a mile |