at the heart

基本解釋

At the heart of all these widgets is just an XML file.
在所有這些窗口小部件的核心部分其實就衹是一個 XML 文件。
But there was no one to hear them; down there under the streets of Paris we were as secure as at the heart of a pyramid.
但是沒人能聽到，在巴黎的街道之下，我們就像在金字塔的中心一樣，不怕給人聽到。
For me, this uncertainty lies at the heart of what we need to know if we are to understand ourselves and behave differently.
對我而言，這樣的不確定性就存在於我們需要去了解的內(nèi)心，即我們懂得我們自己和行爲(wèi)本身是不同的。

At the heart of the two thousand three hundred pages in the bill are promises to protect average Americans.
And this belief that's called Calvinist predestination is really at the heart of mainstream English Puritanism at this point.
這種叫做加爾文宿命論的觀點(diǎn),與主流英國清教主義相一致。
耶魯公開課 - 彌爾頓課程節(jié)選
And in fact, it lies at the heart of a lot of useful computational techniques where we save results.
實際上，它也是很多保存結(jié)果的,計算技巧的核心。
麻省理工公開課 - 計算機(jī)科學(xué)及編程導(dǎo)論課程節(jié)選

At the heart of this model is a reimagined educational experience grounded in mastery-based, personalized learning.
FORBES: How to Bring Quality Online Education to a Global Student Population