Desertification is accomplished primarily through the loss of stabilizing natural vegetation and the subsequent accelerated erosion of the soil by wind and water.
起到稳定作用的自然植被不断减少，随后土壤受风雨的侵蚀加速，就成为了沙漠化的主要成因。
Scientists have long suspected that loss of sea ice was responsible, but other factors such as changes in wind, clouds and ocean currents have also been blamed.
科学家早就怀疑海冰的融化是造成这种情况的罪魁祸首，其他可能的原因包括风 ，云和洋流的影响。
The disease's symptoms include diarrhoea, tiredness, anaemia, wind and in some cases weight loss.
该疾病的症状包括腹泻、疲劳、贫血、胀气，某些情况下还有体重减轻。
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