It would be useful if you could nail down the source of this tension.

如果你能弄清这种紧张情绪的根源，会是有用的。

《柯林斯英汉双解大词典》

The burning of fuel, such as by cars, is not the only source of this increased heat.

诸如汽车之类的燃料燃烧不是这种热量增加的唯一来源。

youdao

Such explanations, however, illuminate neither the source of this curious convention nor the reason for its popularity.

然而，这样的解释既不能说明这个奇怪的惯例的来源，也不能说明它流行的原因。

youdao

And because this vital source of lending has frozen up, no financial recovery plan will be successful unless it helps restart securitization markets."

VOA: special.2009.02.13

Aristotle, in his Politics of course, tells us the most on this subject and often he is our source of information.

亚里士多德,在他的《政治学》中,告诉我们很多有关这个主题的知识,他经常也是我们信息的来源

耶鲁公开课 - 古希腊历史简介课程节选

Language of this source is a device, and in relation to other devices it's called a "function."

语言是一种工具，和其他工具一样有功能“

耶鲁公开课 - 文学理论导论课程节选

First of all, the source of this wisdom is somebody who went to prison for bribing securities plaintiffs.

FORBES: Lerach Blames Pension Woes On Pay-To-Play -- Theirs, Not His

So, really, he's trying to spin it away from an examination of who the likely source of this story is.

MSN: Cain accuser got a year's salary in severance pay

In coming days, I suspect we will have more clarity about the source of this and various other accounts of personal meetings.

FORBES: Who's Been Duped? The Manti Te'o Hoax.