The length of the workday, for many workers, is defined by time.

对于许多工作者来说，工作日的长短是由时间来定义的。

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Once you have started the boulder rolling, it develops momentum, which is defined by its mass and velocity.

一旦你开始让巨石滚动，巨石就会产生动量，这是由其质量和速度决定的。

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Every era of history is defined by its signature challenge.

每个时代都是由其标志性的挑战界定的。

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This Cuban music or "son" is defined by the beat of the drum and the call of the singer.

VOA: special.2009.04.19

So any kind of ideas, I think any community is defined by its religiosity; they're still made up by normal individuals and human beings.

我想，任何的想法,任何的社会都是由其宗教信仰所定义的,它们仍然是由个人所组成的。

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And syntax uses another neat trick, this is defined by Wilhelm von Humboldt as the "Infinite use of finite media."

语法使用了另一种神奇的把戏,威廉·冯·洪堡,将之定义为"有限域的无限应用"

耶鲁公开课 - 心理学导论课程节选

Willy is defined by the spirit of competition and by its corollary, invidious comparison.

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Privacy, especially user-defined privacy, sits on a sliding scale that is defined by the individual.

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You need to hold yourself to a high standard that is defined by customers.

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