Tommotian and Burgess Shale formations give clues about Precambrian evolution.

早间，Tommotian和伯吉斯页岩化石群为前寒武纪进化提供了线索。

In between are several layers of dense shale rock.

中间是几层致密的页岩。

The land at the bottom of the sea was black shale rock.

海底的土地是黑色页岩岩石。

That shale is now at the bottom of the Badlands.

这个页岩现在位于荒地的底部。

When they do, some of the new supplies will be used to generate electricity.

等这开始开采时，新供应页岩气中的一部分将用于发电。

He said agriculture and oil and gas from rocks, called shale, can help the economy.

他说，农业和来自页岩的石油和天然气可帮助经济发展。

Southeast shore of Lake Erie, lots of shale on the cliffs.

伊利湖东南岸，悬崖上有大量页岩。

It reckons that there are 7,299 trillion cubic feet, 10% more than its 2011 estimate.

据估计，全球页岩气储量高达7，299万亿英尺，比2011年的预测值高出10%。

So the Burgess Shale specimens weren't so spectacular after all.

所，布尔吉斯页岩标本原来并非那么不可思议。

A wave of consolidation could be coming to the US shale oil industry.

美页岩油行业可能迎来一波整合浪潮。

What are the economic realities that are really giving shale executives pause here?

是什么经济现实让页岩行业的高管们犹豫不决？

It also reveals the idea that shale oil might guarantee energy security to be a fallacy.

这也揭示了页岩油可能保障能源安全的观点是一种谬论。

It is often used to recover these fossil fuels from rock called shale.

这种技术通常用于从页岩中提取石化燃料。

The shale deposit there has proven to be a treasure for the study of ancient life.

当地页岩矿床已被证明是研究古代生命的宝库。

Other countries with huge shale-gas reserves, such as China and Australia, have barely begun to exploit them.

其他页岩气储量丰富的，比如中和澳大利亚，还几乎没有进行开采。

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二叠纪盆地的页岩油资产，阿纳达科是该地区领先的独运营商。

So analysts view this as a big step in consolidating the shale oil industry in the US.

分析师认为，这是整合美页岩油行业的一大步。

Clay is also a rock; and when it has been pressed a great deal, it is called shale.

粘土也是一种石头，经过大力挤压之后，叫做“页岩”。

Experts believe Europe might have trillions of cubic meters of shale gas. Shale is a kind of rock.

专认为欧洲可能有数万亿平米的页岩气，页岩是一种岩石。

American refineries require that really light shale to be mixed with heavy crude which is often found with OPEC.

美炼油厂要求真正轻质的页岩与石油输出组织经常发现的重质原油混合。