We won by a hair's breadth.

我们以些微之差赢了对手。

《牛津词典》

The gang escaped the police by a hair's breadth.

歹徒在千钧一发间逃脱警方追捕。

youdao

Eg. He escaped death by a hair's breadth. If the other car had been going any faster, he would certainly have been killed.

他简直是死里逃生。要是那辆车开得再快一点，他肯定被撞死了。

youdao

The Welsh Assembly was set up only after a referendum approved it by a hair's-breadth, and that was after years of devolution campaigning by Labour.

ECONOMIST: Regional government