The origin of the custom is obscure.

该习俗的起源鲜为人知。

《柯林斯英汉双解大词典》

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They're basically made up of debris left over from the origin of the solar system.

它们基本上是由太阳系起源时遗留下来的碎片组成的。

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This,explains historian Francois Bugnion, is the origin of the Geneva Conventions.

VOA: special.2009.07.01

We can think in terms of repetition, obviously, as the delay that sets in between an origin and an end.

我们可以想想看这里面的重复，很明显，重复性的情节将起因和结果隔开来。

耶鲁公开课 - 文学理论导论课程节选

And it's given here this sort of cliched, noble origin with the Native American, the Plains Indian.

在这儿讲有些陈词滥调的，美洲原住民草原印第安人的高尚开端。

耶鲁公开课 - 1945年后的美国小说课程节选

Changing the bounds origin of the superview does not change the position of the view.

ENGADGET: Apple seeds iOS 6 beta 4 to developers: here's the changelog

It was not immediately known whether the origin of the bombings was domestic or foreign.

CNN: Boy killed in Boston blast wrote, 'No more hurting people'

The origin of the flaw, he argues, matters less than the demand for remedy.

BBC: Fighting the law