a miss is as good as a mile
差之毫厘，失之千里
口语·强调失败无大小之分
英文释义
Even a small mistake or failure has the same result as a larger one; being close to success or achieving a goal is not the same as actually succeeding.
例句
He almost won the race, but a miss is as good as a mile—he came in second.
典故来源
源自18世纪苏格兰谚语，强调无论差距多小，失败就是失败，与“差之毫厘，失之千里”异曲同工。