The only source of these compounds in the dolphins' environment is boat paint.

在海豚生活的环境中，这些化合物的唯一来源是船上的油漆。

youdao

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

He's now the only source I have for my father's y.

如今他是找到我父亲的Y染色体基因能借用的唯一资源了。

youdao

That means that we are affecting their ability to make money, lots of money - their only source of money through drugs,"

VOA: standard.2009.12.18

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

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