3 sentences

1. 牧羊人正在草地上放牧羊群。

   mù​yáng​rén zhèng​zài cǎo​dì shàng fàng​mù yáng​qún.

   The shepherd is grazing the flock on the grassland.

   Source: Dong Chinese Dictionary

2. 这些牧民在广阔的草原上放牧牛羊。

   zhè​xiē mù​mín zài guǎng​kuò de cǎo​yuán shàng fàng​mù niú yáng.

   These herdsmen graze cattle and sheep on the vast grasslands.

   Source: Dong Chinese Dictionary

3. 这里的牧民放牧时有时会不小心出界。

   zhè​lǐ de mù​mín fàng​mù shí yǒu​shí huì bù xiǎo​xīn chū​jiè.

   The herdsmen here sometimes accidentally cross the boundary while grazing.

   Source: Dong Chinese Dictionary