Gas mixtures emitted from present-day volcanoes resemble this early atmosphere, suggesting its origin from volcanic eruptions.

现代火山释放出的气体混合物类似于这种早期的大气，这表明它（地球）起源于火山喷发。

youdao

Many scientists now attribute much of the warming of early Earth to oxygen-intolerant microbes—methanogens—that produce the greenhouse gas methane.

现在，许多科学家把早期造成地球变暖的大部分原因归结于厌氧微生物——产甲烷菌——它产生了温室气体甲烷。

youdao

Coal gas rivaled smoky oil lamps and flickering candles, and early in the new century, well-to-do Londoners grew accustomed to gaslit houses and even streets.

煤气可与烟雾缭绕的油灯和摇曳不定的蜡烛相媲美，在新世纪之初，富裕的伦敦人逐渐习惯了有煤气照明的房子，甚至街道。

youdao

So energy expert Eric Potter says it is too early to know how the new gas shale reserves will affect the market.

VOA: special.2009.10.23

Those infrared emissions will allow the telescope to peer through cosmic dust and gas to see things like the evolution of early stars and galaxies.

VOA: standard.2009.05.14

Rees-Jones has made a habit of getting both in and out of gas plays early.

FORBES: Billionaire Makes $400 Million On Marcellus Gas Stake

The images in early May of tear gas and angry mobs in Athens still loom large.

FORBES: Europe's Strikers Make G-20 Protesters Look Like Sissies

Dozens of people were evacuated from their homes in the early hours after a gas main caught fire in Birmingham.

BBC: Homes evacuated due to gas main fire in Longbridge