单词：width of sanitary protection zone
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The Yangtze River is a major habitant for finless porpoise, an aquatic marine mammal close to dolphins. However due to increasing human activities the number of the animal has been declining in China over the years. Provinces along the Yangtze River
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They may be the victims of unwanted sexual advances. And unfortunately, very, very often it might come even from their teachers. When boys and girls reach puberty, their bodies go through many physical changes. But for girls in Africa, the onset of m
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在英语学习中，how与what是很常用的，在许多情况下，两者用法极为相似，只是句型结构稍有不同。 在许多情况下，两者用法极为相似，只是句型结构稍有不同： 1. 两者均可用来引出感叹句，
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