1. Solidungulates, such as horses and cows, have hooves for walking and running.
固体有蹄类动物，如马、牛等，腿上长有蹄子，用于行走和奔跑。

2. The solidungulate species evolved to have a specialized digestive system to process plant material efficiently.
固体有蹄类动物进化出了专门的消化系统，以高效处理植物材料。