They had been debating the order of important steps in the origin of life.

他们曾就生命起源重要步骤的次序问题进行过争论。

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Again a DNA fingerprint is made and compared with those on the dung map, in order to pinpoint the origin of the elephant.

然后测定其DNA指纹，并与从粪便提取的DNA指纹比较，以确定大象的来源地。

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Validates the digital sign, in order to ensure message's origin and integrity.

验证数字签名，以确保消息来源和完整性。

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The short answer is: calling into question whether the processes of random variation and natural selection are all we really need in order to understand the origin of species.

FORBES: Epigenetics: The Revolution That Wasn't

American said it told the Federal Aviation Administration that it was holding its flights, and the FAA instituted a nationwide "ground stop, " holding all American flights at their origin airports until the order was canceled at most airports at about 5 p.m.

WSJ: Delays Hit 1,300 American Airlines Flights

We do not even know why we are relatively hairless or why we walk on two legs, so finding the origin of religious belief is a tall order.

NEWYORKER: It Ain��t Necessarily So