However, burning natural fuels is not the best way to use them, as much of the energy is wasted: it disappears into the air.

然而，燃烧天然燃料并非能源利用的最佳途径。因为在燃烧的过程中，许多能量被释放到空气中，造成了能量浪费。

youdao

Natural gas and coal—also fossil fuels—have similarly seen price declines that look to be long-lived.

天然气和煤炭，还有化石燃料，也出现了类似的价格下跌，而且看起来会持续很长时间。

youdao

Renewables account for only a small share of global primary energy consumption, which is still dominated by fossil fuels—30% each for coal and oil, 25% for natural gas.

可再生能源只占全球主要能源消耗的一小部分，化石能源仍然占主导地位——煤炭和石油各占30%，天然气占25%。

youdao

Natural gas is considered the cleanest of the fossil fuels, the fuels created by plant and animal remains over millions of years.

VOA: special.2009.10.23

Does measures seem to low emissions of greenhouse gases by raising the cost of gasoline, coal,natural gas and other fossil fuels.

VOA: standard.2009.12.12

And what happens when natural gas fuels more of our trucking and transportation fleets?

WSJ: Export U.S. Gas, Yes or No?

Siluria creates catalysts that convert natural gas into fuels and chemicals it says are indistinguishable from oil-derived equivalents.

FORBES: Paul Allen's Vulcan Backs Natural-Gas-To-Fuels Startup Siluria Technologies

In addition to the economic benefits, it is also essential in providing America clean natural gas which fuels public transportation and helps reduce greenhouse gas emissions.

FORBES: EPA's Fracking Hysteria