Wearing a seat belt can reduce your chance of death or serious injury by more than half.

系好安全带可以减少一半以上的死亡或重伤的几率。

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International shipping and aviation could further reduce the global total by at least half a billion tonnes.

国际航运和国际空运界的努力也能将全球总排量降低至少5亿吨。

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Now research from Northwestern University suggests a new way of training that could reduce by at least half the effort previously thought necessary to make learning gains.

如今西北大学一项研究发现了一种新的培训方式，可以将之前认为学习中获得进步所必要的努力减少到一半以下。

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Doctor Yusuf said the single pill, taken once a day, could reduce the average person's risk of heart disease and stroke by about half.

VOA: special.2009.04.08

The analysis also said that provisions in the bill would reduce by about a half-million per year the future number of people entering the country illegally.

NPR: Study: Immigration Bill Would Help Social Security

Even if its sales to the region fell by 25%, this would reduce growth only by half a point.

ECONOMIST: As Japan goes?

Those proposals include sweeping entitlement reforms across the board that over the long run would reduce federal spending by half as a percent of GDP from what it would be otherwise.

FORBES: Gingrich Schools Santorum And Romney On Social Security