所有这些因素结合在一起，使组合键成为一种必不可少的技术。

The combination of all these factors may make composite key design a necessity.

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天赋、勤奋和美貌的组合使她成了佼佼者。

A combination of talent, hard work and good looks have taken her to the top.

《柯林斯英汉双解大词典》

这些敬业演员的组合和出色的剧本使《Valley of Elah》成为了较之《撞车》更为令人满意的影片。

The combination of dedicated actors and a superior script helps make Elah a far more satisfying film than Crash.

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Indexed portfolios, you basically say, I want to own all of the stocks that there are, and if the stock market goes up, I make money, if the stock market goes down, I lose money.

指数化资产组合，使之我拥有这些股票，如果股市走高，那么我就赚钱，如果股市走低我就赔钱。

麻省理工公开课 - 计算机科学及编程导论课程节选