the mass extinction的意思|示意

The mass extinction event killed off the dinosaurs and many other animal and plant species.

中找到了元素铱岩层，而这通常会被发现于小行星中。 这次灭绝事件杀光了恐龙以及许多其他动植物物种。

This break in Earth's history is marked by a mass extinction, when as many as half the species on the planet became extinct.

地球历史上的这次重大灾难以物种的大量消亡为标志；当时，地球上多达一半的物种都灭绝了。

The rates of extinction happening today are as great as the rates during these mass extinctions.

现今物种灭绝发生的速度和这些大规模灭绝的速度一样快。

The third largest extinction in Earth's history, the Ordovician-Silurian mass extinction had two peak dying times separated by hundreds of thousands of years.

作为地球史上消亡物种排行第三的大灭绝，奥陶系-志留纪大灭绝有两个死亡高峰期，其中相隔数十万年时间。

Following each mass extinction, there is a sudden evolutionary burst as new species develop to fill the ecological niches opened by the event.

在每一次物种大灭绝后，都有一次突然的进化爆发，因为会有新物种出现来填补灭绝创造的生态位。

Scientists have linked the mass extinction at the end of the Cretaceous with a meteorite impact on Earth.

科学家将白垩纪末期的大灭绝与地球上的陨石撞击联系起来。