boomerang arch

例句：

1. 1. The kids were playing on the boomerang arch, and it was a lot of fun.
   孩子们在玩回飞镖靶，非常有趣。
2. 2. She practiced her archery skills with a boomerang arch, improving her aim.
   她用回飞镖靶练习射箭技巧，提高了她的瞄准能力。
3. 3. The archery competition featured a boomerang arch, attracting many spectators.
   这次射箭比赛特别设置了回飞镖靶，吸引了许多观众。