例句與造句

1. Evident backward erosion had appeared in the coastline of the delta region in recent years owing to decreaseof flow and sediment from the yellow river
   近年來黃河來水來沙呈遞減趨勢，現(xiàn)行河流路海岸線淤進(jìn)減緩，原行河流路海岸線出現(xiàn)了嚴(yán)重的蝕退。
2. It's difficult to find backward erosion in a sentence. 用backward erosion造句挺難的