But reaching that would require a drastic 80 percent cut in emissions by midcentury.

但是为了达到这一目标，将需要在本世纪中叶大幅度削减80%排放量。

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The final bill has a goal of reducing greenhouse gases in the United States to 17 percent below 2005 levels by 2020, and 83 percent by midcentury.

最后出炉的法案目标是到2020年美国的温室气体减少17%低于2005的水平，到本世纪中叶减少83%。

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With world population expected to grow by nearly 50 percent to more than 9 billion people by midcentury, farmland is going to need to be much more productive.

到本世纪中叶，世界人口的增长预计将上升近百分之五十，人口数量将超过90多亿。

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Apart from a few midcentury and contemporary pieces, antique fixtures, furniture and paintings fill the home.

WSJ: Bed-and-Breakfast With Lively Talk

It's expected to double by midcentury, and most of the growth will be in fossil fuels.

WSJ: The Problem With Going Green by David Owen

Bancroft moved into it in the 1950s, with midcentury furniture and Asian art on its walls.

WSJ: Ruth Bancroft, Growing a Piece of History