There are numerous kinds of extinction events.

历史上有过很多种灭绝事件。

Then, another extinction event shook the world.

接著，另一场震撼世界的灭绝事件发生了。

They also believed that we have entered a new extinction event.

他们还认为我们已经进入了一个新的灭绝事件。

The causes of mass extinction events are unsolved mysteries.

大灭绝事件的原因是未解之谜。

And mammals took over after the dinosaur mass extinction event 66 million years ago.

哺乳动物在6600万年前恐龙大灭绝事件后取代了恐龙。

What's happening in the corporate world is corporations are facing a mass extinction event.

而企业世界将遭遇的就是大批倒闭的情况。

There have been several extinction events in the history of the Earth.

地球历史上曾发生过几次灭绝事件。

Having persisted through multiple mass extinction events, hagfish have just about seen it all.

在经历了多次大规模灭绝事件后，盲鳗已经见识过一切。

For various reasons the planet is currently under going a sixth mass extinction event.

由于多方面的原因，地球正在经历第六次大灭绝。

Without extinction events, perhaps we wouldn't be here today.

如果没有灭绝事件，也许我们今天就不会在这里了。

Finally, rapid climate change spurred the greatest known mass extinction event in Earth's history.

最后，快速的气候变迁造成了地球史上已知的最大灭绝事件。

These mass extinction events can be seen in the fossil record.

这些大灭绝事件能从化石记录中看出来。

In fact, some extinction events have helps to accelerate evolution.

事实上，一些灭绝事件有助于加速进化。

Mass extinction events have played an important part in the evolution of life.

大灭绝事件在生命进化中起着重要的作用。

The causes of this extinction event are still unknown.

这次灭绝事件的原因仍不清楚。

What happens in an extinction event?

在灭绝事件中会发生什么？

And the mass extinction event that had looked inevitable began to shift into a global project of mutual care.

看起来不可避免的大规模灭绝事件开始转变为一个相互关心的全球性项目。

This was the largest extinction event of all time.

这是有史以来最大的灭绝事件。

One -- one -- one path is we stay on Earth forever, and there will be some eventual extinction event.

一种就是我们永远留在地球上，最终会灭绝。

If they collide with Earth they could cause an extinction event.

如果它们与地球相撞，它们可能导致灭绝事件。