1. A third of Africa is under threat of desertification. 三分之一的非洲大陆面临着荒漠化的威胁。
2. If we continue to destroy forests, land desertification will be an inevitable result. 如果我们继续破坏森林的话，土地沙漠化将会是必然的结果。
3. The expansion of desert-like conditions into areas where they did not previously exist is called desertification. 沙漠化是指类似沙漠的生态环境扩张到原本并没有沙漠的区域。
4. There is little doubt, however, that desertification in most areas results primarily from human activities rather than natural processes. 然而，几乎毫无疑问，大多数地区的沙漠化主要是由于人类活动而不是自然过程造成的。
5. 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。
