Shale gas may generate taxes.

页岩气可能征税。

"Shale gas," he says.

他说：“就是页岩气。”

But the extraction of shale gas is controversial.

不过，页岩气开采是存有争议的。

Shale gas will not solve Britain's energy problems.

页岩气不能解决英国的能源问题。

As the shale gas flows, prices have come crashing down.

随着页岩天然气产量的增加，其价格也开始迅速降低。