The Mississippi River, which used to sweep up dirt in one stretch of the delta only to deposit it in another, has now been channelled, for flood-prevention, to wash the land into the sea.
原本密西西比河冲刷三角洲一端松土的同时另一端沉积着，现在因为要预防洪水被改道了，因此会有陆地被河水冲走。
A storm surge could wash it deep into Louisiana's wetlands, where it would probably kill the grasses that knit what land there is together, raising the risk of further erosion.
一场暴风就可能将其冲入路易斯安那湿地的深处，并杀死能保持土壤的草类，这增加了未来湿地受侵蚀的风险。
People no longer worry about the flood will wash away the sand, also no longer worry about land desertification.
人们不再担心洪水会把沙土冲走，也不再担心土地沙漠化。
Heavy rain can quickly wash away the rich top soil on flat, open land.
飘泼大雨能很快地冲走那里的平坦开阔的表层土壤。
If a large area of land is cleared of trees and bushes and is then badly treated by the farmer, the rain and winds may gradually wash away, or blow away, much of the fertile top-soil.
如果把一大片土地的树木全部砍伐掉，再加之农民耕作不当的话，那么风吹雨打就会逐渐地把大部分表层的肥 沃土壤吹走或冲掉。
If a large area of land is cleared of trees and bushes and is then badly treated by the farmer, the rain and winds may gradually wash away, or blow away, much of the fertile top-soil.
如果把一大片土地的树木全部砍伐掉，再加之农民耕作不当的话，那么风吹雨打就会逐渐地把大部分表层的肥 沃土壤吹走或冲掉。
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