I bought one of the leading brands.

我买了知名品牌中的一种。

《柯林斯英汉双解大词典》

He's just bought one of those exercise things.

他刚买了一副体育器械。

《牛津词典》

The woman only bought one steak for him.

这位女士只给他买了一块牛排。

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For example,in two thousand five, the United States bought one point four billion dollars worth of cocoa products.

VOA: special.2010.02.17

You can go up and look at it because your parents probably bought one and it's still up there.

你可以上去看看,因为你的父母可能曾经买过一个,但是被束之高阁。

耶鲁公开课 - 金融市场课程节选

You said you have a friend who's an artist. Have you ever bought one of their paintings?

你说过你有个朋友是艺术家。你买过他们的画吗？

我喜欢的建筑物 - SpeakingMax英语口语达人

Earlier this year, Webhelp Group bought one of Scotland's biggest call centre employers, Larbert-based HEROtsc.

BBC: Webhelp TSC to create 400 call centre jobs in Scotland

Everyone bought one (or more), including Benjamin Franklin, who hung one in his print shop.

WSJ: Charting the Role They Played | Common Destinations | Winterthur | By Judith H. Dobrzynski

Or: It was a flush year, so you bought one of those pejoratively named McMansions.

FORBES: Magazine Article