乱骑马

例句：

1. 1. He was riding a horse in the park, but he lost his balance and fell off.
   他在公园里骑马时，却失去了平衡摔了下来。
2. 2. The children were playing with their toys in the yard, but they suddenly stopped and ran around the house.
   孩子们在院子里玩他们的玩具，但突然停下了，绕着房子跑。
3. 3. She rode her horse through the forest, enjoying the fresh air and beautiful scenery.
   她骑着马穿过森林，享受着新鲜空气和美丽的风景。