Other studies suggest that the rate of mortality is a whopping 250% higher among single men than it is among married men.

更有其他研究显示，单身男性的死亡率和已婚男性相比竟高达250%。

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In the Amazon, my colleagues and I found the mortality rate for the biggest trees had tripled in small patches of rainforest surrounded by pasture land.

在亚马逊河流域，我和我的同事们发现，在被牧场包围的一小片雨林中，最大的树木的死亡率增加了两倍。

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Since dolphins rid their bodies of the compounds rapidly once exposure ceases, their mortality rate should decline rapidly if such boat paints are banned.

由于海豚一旦停止接触，它们会迅速地将身体里的化合物清除，所以如果禁止使用这种船用油漆，它们的死亡率就会迅速下降。

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Researcher Daniel Fitzgerald explains. "The results of the trial showed that the rate of mortality was cut by 75 percent if antiretroviral drugs were started earlier.

VOA: standard.2010.07.21

Health officials in New York say the maternal mortality rate in the United States itself rivals that of poorer developed countries like Singapore and Ireland.

VOA: standard.2010.06.23

Novy-Hildesley explains, the doctor faced a high rate of infant mortality in the clinic.

VOA: standard.2009.12.18

The rate of mortality from cancers not related to smoking for those between 35 and 69 is actually falling steadily by 15% since 1950.

ECONOMIST: Plenty of gloom

"Recent research produced by the CMI (Continuous Mortality Investigation of the Institute of Actuaries) indicates that the rate of mortality improvement is not slowing down as would be expected, " it said.

BBC: NEWS | Business | Pension plans ignore longer lives

Estimates of the number of dead run to the hundreds of millions world-wide and scores of millions in the U.S. If nature fails to deliver an epidemic, it is unfortunately easy for a highly trained terrorist, by genetic manipulation, to create a super-virulent pathogen with a nearly 100% rate of mortality.

WSJ: Our Blindness