The reason for this was, first, that the Nile brought water to a rainless desert and, second, that once a year, the river overflowed it anks, leaving, as the water went back, a new layer of fertile soil.

• 这其中有两个原因:其一,尼罗河为干旱的沙漠带来了水源;其二,每年,尼罗河水都会溢出河岸,流走;水再次退回河中,肥沃的土地形成了。