That, in effect, would allow it to set emissions standards for new power plants, and also to raise fuel-economy standards for cars beyond the levels required by existing laws.

事实上，这会让EPA给新电厂制定排放标准，并提高汽车燃油性经济的标准，使其能够高出现行法律要求的水平。

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The Obama administration scored a major win for fuel-efficient cars this week by finalizing new standards that will increase the fuel economy of cars to the equivalent of 54.5 mpg by 2025.

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Mr Obama is championing ambitious fuel-economy standards for vehicles that would result in cars doubling their average fuel efficiency by 2025.

ECONOMIST: Energy and the environment

Thanks to new fuel economy standards, by the middle of the next decade, cars will go twice as far on a gallon of gas.

WHITEHOUSE: President Obama Speaks at the 2013 White House Science Fair