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英语翻译When droughts occur and there isn't enough vegetation to

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英语翻译
When droughts occur and there isn't enough vegetation to bind the soil together,wind and water can cause large-scale erosions.The topsoil is removed due to dust storms and when rain eventually falls,rapid run-off causes many a problem.
Desertification is particularly a problem in Africa as it is a poorer continent and in times of desertification it looks for the aid of other countries as famines are struck across its regions.
英语翻译When droughts occur and there isn't enough vegetation to
当干旱来临,没有足够的植被来固定土壤的时候,风和水就会产生成大规模的侵蚀作用.沙尘暴会掀去表层土,而当雨水降落下来的时候,快速的径流就会引起很多问题.
沙漠化对非洲尤其影响严重,因为非洲大陆较贫穷,面对沙漠化造成的大面积饥荒,它只能求助于其他国家.