free end travel

例句：

1. 1. The robot'sfree end travel is limited by its sizeand weight.
   这个机器人的自由端移动受到其大小和重量的限制。
2. 2. The teamdecided to move the ballat the free end of thefield.
   团队决定在场地的一端移动球。
3. 3. The car was moving freely at thefree end of the road.
   汽车在路的一端自由行驶。