单语范例（未经PONS编辑处理）
Because the rivers and streams have such steep gradients and are so fast moving, they are erosive instead of depository in nature.
en.wikipedia.org This large height difference created past rivers of substantial erosive power.
en.wikipedia.org The erosive power of wind, rain, snow, and wavesboth from above and belowhas formed the landscape into razor-sharp pinnacles.
en.wikipedia.org It contains numerous deep erosive cuts created by the seasonal melting of the permafrost.
en.wikipedia.org Many people believe that it is only done for the benefit of well-heeled adjacent land-owners rather than for erosive or littoral purposes.
en.wikipedia.org