Bengladesh is famous for floods. Flood bring disast to them, at the same time, it can fetlilize the field . There are many rivers around Bengladesh . It formed by alluviation.

• 孟加拉国以洪水为名，洪水带来灾难的同时也给土壤带来了丰富的肥料。这个国家的河流特别多，它就是河流冲积而形成的一个国家。