以下为句子列表：
英文: But water is pumped into the hole throughout the year, attracting animals when it might otherwise be dry, and overgrazing has substantially depleted the surrounding veld vegetation.
中文: 天然归天然，为了避免水塘乾掉，一年里还需以人工方式灌水，以确保随时有水可以吸引动物前来饮用。不过这一带由于草食动物过度啃食，周围草木几乎快秃光了。
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英文: Deserts have expanded to overtake previously vegetated areas, accelerated in some cases by overgrazing of domesticated animals.
中文: 沙漠已经扩大，侵占着先前的植被覆盖地区，在某些地区，由于过度放牧沙漠化的速度正在加快。
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英文: Overgrazing (again, widely practised by traditionalcultures) causes soil erosion and turns fertile pasture into desert.
中文: 过度放牧（这同样也被“传统的”耕作所广泛采用）导致了土壤浸蚀，并把肥沃的草原变成了沙漠。
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