What's the idea behind this?

这背后的意图是什么？

《牛津词典》

What lay behind this strange outburst?

这反常的感情冲动的真正原因是什么？

《牛津词典》

What is the motivation behind this sudden change?

这种突然转变背后的动机是什么？

《牛津词典》

The image reminds us about the man behind this extraordinary collection of images and the effort required of him, his wife and two young children to make this project.

VOA: special.2009.03.23

Behind this environment are the great social processes of migration and modernization that produced that new urban form, the metropolis.

在这种环境背后是移民和现代化的重大社会进程,所带来的新的城市形式，即大都市。

耶鲁公开课 - 现代诗歌课程节选

So if you try to find out a little bit more of like the philosophy behind this language,

所以如果你努力找出一些类似语言背后的哲学之类的东西，

学外语的时候 - SpeakingMax英语口语达人

The idea behind this principle is that simple systems tend to be more secure.

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Parity laws aren't the only force behind this growth, but experts say they're key.

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The fact that there are such stark contrasts behind this decision points to a greater conundrum.

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