The origin of western theatre goes back into the mists of time but seems to have begun to take recognizable shape about 2600 years ago in greece-and wine was a key ingredient.

西方戏剧的起源已经消失在历史的迷雾当中，但似乎在大约2600年以前的希腊，它已经有了我们熟悉的样子，——葡萄酒是其中一个关键因素。

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Birds evolved from dinosaurs, but the origin of their feathers may trace back even deeper in time, to the common ancestor of dinosaurs and pterosaurs, like the fossil at left.

鸟类是从恐龙进化而来的，但羽毛的起源则要追溯到更为久远的上古时代，恐龙和翼手龙的共同祖先才是羽毛出现的源点，例如上图左边的这块化石。

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Such work has helped put Boston and Cambridge among the elite centers of studies of life’s origin, and Szostak is now devoted essentially full-time to synthesis of life.

这种工作促使波士顿和剑桥成为研究生命起源的精英中心，绍斯塔克现在基本上把全部时间用在生命合成上。

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It has to have an origin of replication, which we talked about last time, which is compatible with the cells.

所以质粒必须带有复制起点,我们上次讲过,该起点要与受体细胞匹配

耶鲁公开课 - 生物医学工程探索课程节选

This is why he's continually placing the imaginative origin of the poem back to the very dawn of time, perhaps even back before if you can imagine such a time -- before the very dawn of time.

这就是为什么弥尔顿总是试图把想象中的这首诗的起源,推至时间开始的时候，甚至更早,-如果你们能想象这样一个时间--在时间开始之前。

耶鲁公开课 - 弥尔顿课程节选

Before acting, he added, the UK must be sure that an offender's country of origin was willing to imprison them for the same length of time as they would serve if they stayed in domestic jails.

BBC: The exterior of Norwich prison

"Because mutations start occurring at regular intervals in these genes as soon as a new species evolves - like the ticking of a clock - we can use them to trace the evolutionary history of a species back to its time of origin, " said Dr Hedges.

BBC: Earth AP

If proven, this could push the origin of dinosaurs back to a time when there was a wide variety of reptile families evolving, long before the dinosaur would become the dominant force on the planet.

ENGADGET: Alt-week 12.08.12: The oldest known dinosaur, lighting up a space station and the black marble