The horses' hooves raised a cloud of dust.

　　馬蹄翻飛，揚起一片塵土。

　　The horses thundered across the valley floor.

　　馬群轟隆隆地從谷底奔跑而過。

　　Oats provide good, nutritious food for horses.

　　燕麥為馬提供營養(yǎng)豐富的好飼料。