A nationwide survey shows more than half of all Americans now test positive for one or more allergens.

一项全国性的调差显示，有一半以上的美国人在一个过多个过敏原检测中呈阳性。

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A nationwide survey was undertaken in 1999-2001 to document the magnitude and causes of blindness.

为统计失明人数及病因，于1999～2001年度在全国范围内开展了调查。

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A nationwide survey reveals that a sizeable majority of men would like to see additional sports programs on television.

198一项全国性调查发现，大多数的男性希望在电视上看到更多的体育节目。

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A more accurate figure will emerge next year when the five-yearly nationwide health survey is taken.

VOA: standard.2009.11.10

And so this will only come as confirmation." A just-released nationwide survey of Afghans finds them more optimistic than expected, but still concerned about corruption and insecurity.

VOA: standard.2009.10.28

In addition, they also conducted a nationwide survey of 1, 000 U.S. residents in March 2012.

FORBES: Connect

That effort included a nationwide survey of 3, 257 U.S. residents ages 44 to 75.

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At 1BIGresearch, we asked a nationwide survey of consumers what they perceived as the six most important attribute of online retailing.

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