Fracking is the process of putting liquid into the ground to extract natural gas.

水力压裂是将液体放入地下以提取天然气的过程。

The energy giant Royal Dutch Shell has signed a deal with Ukraine to extract natural gas trapped underground in shale rock.

石油巨头荷兰皇家壳牌与乌克兰签署协议，该公司将开采页岩下的天然气。

Everything we touch today comes from oil or natural gas extracted from the ground, and that is just unsustainable.

我们今天接触到的一切都来自从地下开采的石油或天然气，这是不可持续的。