Glaser claims that these earth works, built between AD 400 and 1400, were at the heart of urban civilizations.

格拉泽声称，这些建于公元400年至1400年间的土方工程是城市文明的核心。

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She had not expected him to remember her at all and her hard little heart grew quite warm.

她完全没有指望他会记得她，她那冷酷的小心肠变得十分温暖。

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He was a romantic at heart and longed for adventure.

他骨子里是一位浪漫的人，渴望历险。

《牛津词典》

Lead author David Dunstan at the Baker IDI Heart and Diabetes Institute in Victoria says the body was designed to move.

VOA: special.2010.01.13

And this belief that's called Calvinist predestination is really at the heart of mainstream English Puritanism at this point.

这种叫做加尔文宿命论的观点,与主流英国清教主义相一致。

耶鲁公开课 - 弥尔顿课程节选

And in fact, it lies at the heart of a lot of useful computational techniques where we save results.

实际上，它也是很多保存结果的,计算技巧的核心。

麻省理工公开课 - 计算机科学及编程导论课程节选

But the terms of joint enterprise are different - and at the heart of it is the concept of foresight.

BBC: Is joint enterprise a 'lazy law'?

We will rebuild this economy stronger than before and at its heart will be three powerful words: Made in America.

WHITEHOUSE: Signing the Manufacturing Enhancement Act of 2010

Over the last 50 years the cost of information has been dramatically reduced and at the heart of it is the semiconductor.

FORBES: My Top 10 Economic Worries