Soil erosion follows drought by a year or so.干旱之后一年左右就会出现土壤侵蚀。

Coastal erosion is aggravated by the rapid expansion in tourist development.海岸线侵蚀随着旅游业的迅速发展越来越严重。

the gradual erosion of individual freedom个人自由的逐渐削弱

the erosion of confidence in world financial markets对世界金融市场的信心的逐渐削弱

There has been a steady erosion in the president's popularity.总统的受欢迎程度一直在下降。