An ugly woman serves as a foil to a pretty girl.

一个丑女人可以将美丽的姑娘反衬得更加漂亮。

《新英汉大辞典》

It must be acknowledged that she had faults to foil her gifts.

必须承认她有缺点来衬托她的优点。

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The recipe said to wrap the salmon in foil, then run it through a full cycle without using any soap.

食谱上说，用锡箔纸把鲑鱼包起来，然后在不使用任何肥皂的情况下全循环运转。

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PATH designed a foil pouch that could keep the medicine stable for up to two months.

VOA: special.2010.05.24

And, so the experiment was to bombard the foil with these alpha particles, and that measure what happens to them.

因此用这些阿尔法粒子,去轰击金箔，将会发生什么事情呢。

麻省理工公开课 - 固态化学导论课程节选

We've known since antiquity that you could take gold, and you can hammer to very, very thin foil.

我们已经知道很久以前，人们就能用锤子把金敲成非常非常薄的箔片。

麻省理工公开课 - 固态化学导论课程节选

"He becomes a foil to everyone, but primarily Diane and Will, " co-creator Robert King says.

CNN: STORY HIGHLIGHTS

His comments provide a comic foil to the anxiety investment bankers have caused these last few years.

FORBES: Pranking Goldman's Lucas Van Praag

And Bracken has proved an effective foil to the opening pair of Glenn McGrath and Brett Lee.

BBC: SPORT | Cricket | International Teams | Australia | Remodelled Aussies excite Ponting