他以微弱的优势赢得了比赛。

He won the race by a narrow margin.

不错，最好的队伍未必会赢得冠军且战术的调整能够得到微弱的优势，但毕竟只是微弱的。

Yes, the best team may not win the title and tactical variations can give slight advantages, but they are slight only.

奥巴马获胜具有象征性的意义，他打破了过去两次总统竞选仅以微弱的优势决定成败的局面。

Obama's victory represents a break with the razor-thin margins in the last two presidential elections.

另外，最近有一些调查显示在大选中朱利安尼以微弱的优势压倒希拉里·克林顿，共和党很久没有这样的成绩了。

And a couple of recent polls showed Mr Giuliani narrowly pipping Hillary Clinton in a general election—the first time for a while that any Republican has done so.