As a part of this investigation, Brandt used data from an international survey conducted between 2005 and 2007.

作为本次调查的一部分，勃兰特使用了2005年至2007年进行的一项国际调查的数据。

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One international survey ranked South Africa last of 45 countries in science scores, behind Ghana and Botswana.

一份国际调查将南非列入了科学得分最低的45个国家之列，排名在加纳与博茨瓦纳之后。

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In 2007 an international survey by Pew found that American support for free markets had edged down from five years earlier.

2007年皮佑调查结果表明，美国人对自由市场的支持相较五年前微微下跌。

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In Transparency International's just-released 2009 survey of world corruption, Afghanistan was only one step above the bottom rung,ranking 179th out of 180 countries surveyed.

VOA: standard.2009.11.17

Gallup's honeypot has attracted a swarm of competitors, among them Development Dimensions International, Hewitt Associates and International Survey Research.

FORBES: No Employee Left Behind

Last month, Transparency International's annual international survey of public perception of corruption found that the situation in Greece has deteriorated further.

BBC: Greeks fight back against corruption

Some nations may take part in one international survey, but not in another, the study said, and a lot of emphasis can be placed on small differences between countries' test scores.

BBC: Warning over world schools rankings