In between are several layers of dense shale rock.

中间是几层页。

That shale is now at the bottom of the Badlands.

这个页现在位于荒地底部。

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

等这些国家开始开采，新供应页气中一部分将用于发电。

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

他说，农业和来自页石油和天然气可以帮助经济发展。

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重新投资吗？

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

是什么经济现实让页行业高管们犹豫不决？

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

美国在页能源领域丰富产量也压低了石油价格。

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

丰富页气压低了天然气价格，目前天然气价格处于20年来最低水平。

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纪盆地页油资产，阿纳达科是该地区领先独立运营商。

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

分析师认为，这是整合美国页油行业一大步。

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

专家认为欧洲可能有数万亿平方米页气，页是一种石。

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

美国炼油厂要求真正轻质页与石油输出国组织经常发现重质原油混合。

The process which involves the fracturing of rock to extract oil or shale gas inside has raised safety concerns.

这种通过压裂石来开采石油或页气方法引起了安全方面担忧。

And fracking has unleashed a flood of oil formerly trapped in shale rock underneath North Dakota, among other places.

液压破碎法将北达科他州及其他地区页下石油大量开采出来。

So, Myles, what are these moves within the US shale oil industry mean for the transition to cleaner energy?

迈尔斯，美国页油行业这些举措对向清洁能源过渡意味着什么？

Concerns about earthquakes have also been raised in connection with the practice of hydraulic fracking to produce shale gas.

人们开始担心液压破碎法开发页做法会导地震。

Shale oil is already gushing out of the ground in America, displacing imports to the world's largest consumer.

作为全球最大石油消费国，美国国内页油早已喷薄而出，开始替代进口石油。

So Argentina has started a big program of drilling to increase shale oil and gas production in Patagonia.

阿根廷已经开始了一项大型钻探计划，以增加巴塔哥尼亚页油气产量。

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

其他页气储量丰富国家，比如中国和澳大利亚，还几乎没有进行开采。

THE boom in shale-gas production in America, using " fracking" technology, is becoming a bust for some big drilling firms.

由于" 水力压裂" 技术使用，美国页气开采迅速发展，但这却使一些大型钻井公司破产。