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化提供了线索。

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

这种技术通常用从页岩中提取石化燃料。

In between are several layers of dense shale rock.

中间是几层致密的页岩。

That shale is now at the bottom of the Badlands.

这个页岩现在位荒地的底部。

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

海底的土地是黑色页岩岩石。

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

等这些国家开始开采时，新供应页岩气中的一部分将用发电。

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以帮助经济发展。

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。

But do you think we'll see a renewed investment in shale eventually?

但你认为我们最终会看到对页岩的重新投资吗？

America's boundless production in shale energy has also kept down oil prices.

美国在页岩能源领域的丰富产量压低了石油价格。

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

这了页岩油可能保障国家能源安全的观点是一种谬论。

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。

The real wild card is shale.

真正的不确定性因素是页岩。

An abundance of shale gas has depressed prices, which are at their lowest in 20 years.

丰富的页岩气压低了天然气价格，目前天然气价格处20年来的最低水平。

Once a shale well is drilled, there are only marginal savings from stopping production.

一旦页岩井开钻，停产只会带来很少的边际储蓄。

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

所以，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.

美国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？

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地的页岩油资产，阿纳达科是该地区领先的独立运营商。

Mr Sitton maintains that production cuts may be necessary to ensure that America's shale industry survives covid-19.

Sitton坚持认为，为了确保美国页岩产业能在covid-19中存活下来，减产可能是必要的。