They say it could be reached by an unmanned spaceship before the end of the century in time for people alive today to see it.

他们说，在本世纪末之前，无人驾驶的宇宙飞船就能到达那里，让今天活着的人们及时看到它。

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One out of three people alive today live near a coast.

目前有三分之一的人口住在海岸附近。

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And now medical care helps to keep people alive longer.

现在的医疗保健使得人们活得更长。

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It caused a huge fireball, they say,that instantly burned most of the people alive.

VOA: standard.2009.09.04

One thing you cannot say about him is that he's culturally insensitive, arguably one of the most sensitive people alive.

但你不能说他在文化方面不敏感，他可以说是还在世的最敏感的人之一。

哈佛公开课 - 幸福课课程节选

You can keep people alive for many decades with periodic dialysis to remove waste products from the blood.

通过周期性的透析除去血液中的代谢废物,可以使病人寿命延长几十年

耶鲁公开课 - 生物医学工程探索课程节选

In AIDS, the drugs can keep people alive for many years, but they are never cured.

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Someone has skinned three people alive and tossed their bodies over a very tall balcony.

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Of 7 billion people alive today, 6 billion live in emerging and developing markets.

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