mounted

骑警

police officers who ride horses, especially for crowd control or in parks

骑马巡逻队

a group of soldiers or police officers on horseback who guard an area

一组骑马守卫一个地区的士兵或警察

骑兵

a soldier who fights on horseback, also known as cavalry

在马背上作战的士兵，也称为骑兵

a knight who is riding a horse, typically in a historical or fantasy context