去年，众议院通过了总量管制与排放交易法案，该法案实施后，到2020年，温室气体排放量将比2005年削减17%。

Last year, the house passed a cap-and-trade bill that would have cut greenhouse gas emissions 17 percent below 2005 levels by 2020.

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自从一项联邦总量管制与排放交易法案通过了众议院的批准但却在参议院遭到拒绝后，能源和气候变化议题就滑到了国会任务优先级别名单的下方。

Since a federal cap-and-trade bill made it through the House but died in the Senate, energy and climate change have slipped down the list of national priorities.

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