【双语有声阅读】沙尘暴(5)
时间：2016-07-04 06:01:54
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（单词翻译）
It is a fact that excessive
herding1 of animals and exploitation of
grasslands2 are responsible for the majority of dust storms. This means that dust storms are largely a result of human actions; in other words, they are controllable.
事实上，沙尘暴形成的主要原因是过度放牧及滥垦草原，这表明沙尘暴大多是人的活动所导致，也就是说，它们是可加以控制的。
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