jumper tube

例句：

1. 1. The athletes are usingthe jumper tubes to improve theirvertical leap.
   运动员们正在使用跳高管来提高他们的垂直跳跃能力。
2. 2. The jumper tube is a crucial component of thegymnastics apparatus.
   跳高管是体操器械中至关重要的组成部分。
3. 3. Thejumper tube is used in various sportsto help athletes reach higher heights.
   跳高管被用于各种运动中，帮助运动员达到更高的高度。