The bear case rests on patience, a Persian restoration and a Permian boom.

看跌的理由在于耐心，波斯的恢复和二叠的繁荣。

The idea that an impact caused the Permian extinction has been around for a while.

导致二叠大灭绝的原因长期以来都没有一个定论。

Presto! The Permian mass extinction is explained.

就这样！这就是二叠大灭绝的解释。

It happens at the end of the Permian period about 250 million years ago.

它发生在大约 2.5 亿年前的二叠末期。

The acquisition expands Chevron's shale-oil assets in America's Permian basin, where Anadarko is a leading independent operator.

此次收购扩大了雪佛龙在美国二叠盆的页岩油资产，阿纳达科是该区领先的独立运营商。

The event took place at the end of what Earth scientists, or geologists, call the Permian Period.

这一事件发生在球科学家或质学家所说的二叠末期。

And then all eyes began once again turning back towards the gigantic Permian Basin over in west Texas.

然后，所有的目光又开始转向德克萨斯州西大的二叠盆。

And as it turned out, the Permian too was absolutely covered with previously inaccessible petroleum-rich shale rocks beneath the surface.

而事实证明，二叠盆的表下也绝对覆盖着以前无法触及的富含石油的页岩。

Marathon owns assets in Eagle Ford in Texas, Bakken in North Dakota, Permian in New Mexico and Texas, and in Oklahoma.

马拉松石油公司在德克萨斯州的鹰滩、北达科他州的巴肯、新墨西哥州和德克萨斯州的二叠盆以及俄克拉荷马州拥有资产。

It's about natural gas in the Permian Basin in the west of Texas.

这是关于德克萨斯州西二叠盆的天然气。

But as the Permian went on, the climate got hotter and drier.

但随着二叠的进行，气候变得越来越 热和干燥。

First was the Permian-Triassic extinction 252 million years ago -- aka the Great Dying.

首先是 2.52 亿年前的二叠-三叠大灭绝 ——也就是大灭绝。

The cause of the End-Triassic extinction is even murkier than the End-Permian extinction.

三叠末灭绝的原因甚至比二叠末灭绝的原因还要模糊。

In the four million years since the Permian extinction...

{\an8}（2.48亿年前）二叠灭绝之后的400万年中。

We think something similar was the cause of the end-Permian extinction.

我们认为类似的事情是二叠末灭绝的原因。

This includes what's probably the Permian's most famous amphibian: Eryops, found in Texas and the southwestern United States.

这包括可能是二叠最著名的两栖动：Eryops，发现于德克萨斯州和美国西南。

With unique teeth, extra speed, and a complex social life, Dimetrodon was able to dominate Early Permian environments.

凭借独特的牙齿、超快的速度和复杂的社会生活，异齿龙能够主宰二叠早期的环境。

Car says the Permian Basin has seen this big boom in oil drilling over the last 10 years.

卡尔表示，过去 10 年来，二叠盆的石油钻探活动蓬勃发展。

Estimates for the number of animal species alive at the end of the Permian range from as low as 45,000 to as high as 240,000.

据估计，二叠结束的时候，活着的动数量从45000-240000不等。

But the real whopper was the Permian extinction of about 245 million years ago, which raised the curtain on the long age of the dinosaurs.

但是，真正厉害的是大约24500万年前的二叠灭绝，它为漫长的恐龙时代揭开了序幕。