Better water filters, then, could save many lives and improve many others, and Yi Cui of Stanford University thinks he has come up with one.

所以更好的滤水器就能挽救许多生命，提高人们的健康水平。而来自斯坦福大学的崔毅教授认为他已经研制出了这样的滤水器。

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Seven years ago, biochemist Zheng Cui of Wake Forest University was conducting a routine experiment, injecting test mice with a strain of cancer cells so aggressive it caused a 100 percent death rate.

七年前，威克森林大学的生物化学家崔政正在进行一个常规的试验：他给试验鼠注射一种攻击性很强的癌细胞，致死率100%。

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The limiting factor, Cui explained, is the availability of freshwater for the start of the process.

崔解释说，其中的限制因素是启动这个过程所需的淡水的可用量。

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"The bacteria concentration after filtration depends on the initial concentration of bacteria in water, " said developer Dr Cui of Stanford University.

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Of the north-east's GDP, two-thirds was being produced by state-owned firms, many of which were loss-making, says Cui Wantian of Liaoning University (he thinks they now contribute less than 50%, compared with about 30% nationally).

ECONOMIST: Reforming the north-east

Also at the meeting were China's new finance minister Lou Jiwei, U.S. Ambassador Gary Locke, an assistant Chinese foreign minister Cui Tiankai, and other officials of both governments.

NPR: China's Leader Xi Meets US Treasury Secretary