1 sentence

1. 为了保持河道通畅，水利部门每年都要浚河。

   wèi​le bǎo​chí hé​dào tōng​chàng, shuǐ​lì bù​mén měi nián dōu yào jùn​hé.

   To keep the river channels clear, the water conservancy department dredges them every year.

   Source: Dong Chinese Dictionary