It tends to ignore, and thus eventually to eliminate, many elements in the land community that lack commercial value, but that are essential to its healthy functioning.

这保护体系往往忽视群落中诸多缺乏商业价值但对其健康运作至关重要的物，从而最终导致他们的绝。

One million species are at risk of extinction.

百万个物面绝的危险。

Humankind is not poised teetering on the edge of extinction.

人类并没有在绝的边缘摇摇欲坠。

This disappearance made possible the rise of mammals on the earth.

恐龙的绝使地球上哺乳动物的产生有了可能。

Now, they're the royal equivalent of an endangered species.

现在，它们就像一绝的物。

The Pacific Whale Foundation on the west coast expressed the concern that the scooters are frightening away an endangered species of whale that migrates to Hawaii for breeding.

在西海岸的太平洋鲸鱼基金会担心摩托车会吓走来夏威夷繁殖的绝的鲸鱼物。

I would never have eaten an endangered animal if I had known.

如果我知道，我是不会吃绝的动物的。

Every day, we see that more species are becoming extinct.

每一天，我们都看到越来越多的物绝。

They are critically endangered due to widespread deforestation.

它们是极度危物，造成其频绝的原因是大规模的森林砍伐。

I think these dinosaurs went extinct because they simply could not deal with the global environmental changes that were occurring at the end of the Cretaceous period.

我想这些恐龙的绝是因为它们无法适应在白垩纪末期出现的全球性的环境变化。

We are in the beginning of a mass extinction.

我们正处在大绝的伊始。

But for the giant flightless birds that once roamed the Australian outback, it was an omelet station what did'em in.

但对于一曾经在澳大利亚生活无法飞行的鸟类而言，该物绝的原因是它们成为煎蛋的材料。

They concluded that the extinction happened 5,600 years ago, which is a very precise time for a prehistoric extinction.

他们说绝大概发生在5600年前，对于史前的物绝而言，这个时间已经非常精确了。

More than 300 mammal species risk being consumed to extinction.

超过300哺乳动物面因被人类捕食而绝的风险。

Are they indigenous to Antarctica, the smallest insects, a type of butterfly or extinct?

它们是南极最小的昆虫吗，是一蝴蝶还是一绝的物？

WEIR : And it's not just the birds on the brink here.

危绝的不只是鸟类。

To date, Cullen and his team have restored 3,000 hectors of forest and tell us they have already seen at least half of native species using them including some animals at most risk of extinction.

到目前为止，Cullen和他的团队已经恢复了3000公顷的森林，并告诉我们，他们已经看到至少一半的本地物利用这些森林，包括一些绝的动物。

Horses declined to a single species, which appears so sporadically in the fossil record as to suggest that for a time it teetered on the brink of oblivion.

马只剩下一个物，时而出现在化石记录中，表明它一度到了绝的边缘。

In short, animals are becoming extinct at the fastest rate in all of human history.

简而言之，动物正以人类历史上最快的速度绝。

What they are hoping to do is use genetic engineering to create a hybrid of an elephant and a mammoth that would look just like the extinct animal.

而科学家们则希望利用基因工程，培育出大象和猛犸象的一杂交动物，这杂交动物在外观上几乎和已经绝了的猛犸象一样。