联合国儿童基金会在泰国的发言人布罗曼说，纳尔吉斯风暴的受难者当中，儿童占百分之三十到百分之四十。纳尔吉斯风暴两个星期前袭击缅甸。

Shantha Bloeman, a UNICEF spokeswoman in Thailand, says children make up 30 to 40 percent of the victims of Cyclone Nargis, which hit Burma, also known as Myanmar, two weeks ago.

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相对的是，在1990年代早期只占Scotheby销售额的不到百分之十的当代艺术，在去年销售额增长了接近百分之三十。

By contrast, contemporary art, which in the early 1990s accounted for less than 10% of Sotheby’s revenues, grew to nearly 30% of greatly increased revenues by last year.

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据认为，这种被称为特应性的现象可以发生在任何地方，占总人口的百分之三十至五十。

This condition, known as atopy , is thought to occur in anywhere from 30 to 50 percent of the general population.

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There's a term paper which i'll talk more about as the weeks go on that's also worth 30% of the grade.

随着课程的进行我会在讲到学期论文,这也占成绩的百分之三十

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