test-jump

例句：

1. 1. The test-jump is a crucial part of the game.
   测试跳跃是游戏的重要组成部分。
2. 2. He performed a test-jump to demonstrate his skills.
   他进行了一次测试跳跃来展示他的技能。
3. 3. During the race, athletes often perform test-jumps to gain an advantage.
   在比赛中，运动员经常进行测试跳跃以获得优势。