差之毫厘，谬以千里

chàzhīháolí,miùyǐqiānlǐ

An error the breadth of a single hair can lead you a thousand li astray.

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cha1 zhi1 hao2 li2 , miu4 yi3 qian1 li3

the slightest difference leads to a huge error (idiom), a miss is as good as a mile

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差之毫釐，謬以千里|差之毫厘，谬以千里 [chā zhī háo lí , miù yǐ qiān lǐ] ► the slightest difference leads to a huge error (idiom) ► a miss is as good as a mile