堤坝的建设是为了防止洪水泛滥。

Dībà de jiànshè shì wèile fángzhǐ hóngshuǐ fànlàn.

The construction of the dam is to prevent flooding.

河流两岸设置了多个防洪堤坝。

Héliú liǎng'àn shèzhìle duōge fánghóng dībà.

Multiple flood control embankments are set on both sides of the river.

农田周围筑起了一道坚固的堤坝。

Nóngtián zhōuwéi zhù qǐle yī dào jiāngù de dībà.

A sturdy embankment was built around the farmland.