Emission of these "greenhouse" gases contributes to global warming.

这些“温室”气体的排放会导致全球变暖。

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In order to reduce global warming, emission of greenhouse gases needs to be reduced.

为了减缓全球变暖的现象，需要减少温室气体的排放。

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A bill that passed key committee in the house of Representatives in May aims to reduce greenhouse gas emission by 17 percent by 2020 from 2005 levels.

五月，众议院一个重要委员会通过了一项法案，订立的目标是至2020年，温室气体排放量在2005年基础上减少17%。

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In Copenhagen, experts and officials alike are putting the emphasis on what people and governments can do to cut the emission of greenhouse gasses.

VOA: standard.2009.12.09

The company says its goal is to generate electricity from natural,non-edible, renewable and sustainable resources indigenous to West Africa with projects that focus on reducing the emission of greenhouse gases.

VOA: standard.2009.09.13

How, exactly, should more stringent vehicle greenhouse emission standards contribute to producing more efficient truck engines?

FORBES: Magazine Article

The government says biofuels are needed to help keep the lights on and to meet greenhouse gas emission targets.

BBC: Biofuels: MPs agree subsidies for power stations

Sarah Boyack (Labour) asked why Scotland is falling behind the rest of the UK on the Kyoto greenhouse gas emission targets.

BBC: Photo of Scottish flag