"What we have is only receiving impact from the source of the earthquake somewhere south in parts of Java."

VOA: standard.2009.09.07

There's only one source for that, there's only one source of that fertilized egg.

它的来源只有一个,受精卵的来源是唯一的

耶鲁公开课 - 生物医学工程探索课程节选

It doesn't have a concrete independent existence. And that means that human beings and only human beings are the potential source of evil in the world. Responsibility for evil lies in the hands of human beings.

它没有具体的形态，这意味着,人类，也只有人类，可能是潜伏着的邪恶的源泉,人类要为邪恶的出现负责。

耶鲁公开课 - 旧约导论课程节选

It seems Pandora is the only place in the galaxy with deposits of a valuable new energy source worth untold millions back on Earth.

VOA: standard.2009.12.19

That's not the only place but that's a primary source of it.

这不是唯一的出处,但是最主要的来源

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

In a sense, the core of Hobbes' theory of sovereignty can be boiled down to the statement that the sovereign and only the sovereign is the source of law.

从一定意义上讲,霍布斯对国家权力的核心观点,可以概述为,君主，而且只有君主,是法律效力的唯一源泉。

耶鲁公开课 - 政治哲学导论课程节选