jointless

例句：

1. 1. The robot's jointless arms are incredibly flexible.
   这个机器人的无关节手臂非常灵活。
2. 2.The new design features a jointless frame, making it more lightweight and durable.
   新设计的特点是无关节框架，使其更轻便耐用。
3. 3.The jointless design of the new car is a significant improvement over its predecessor.
   新车型的无关节设计比其前身有显著改进。