single-degree-of-freedom system

例句：

1. 1. The robot's ability to move in three dimensions is a significant improvement over its predecessor.
   机器人在三维空间移动的能力比其前身有了显著的改进。
2. 2. This new design reduces the number of degrees of freedom required for movement.
   这种新设计减少了运动所需的自由度数量。
3. 3.In this system, each component has only one degree of freedom.
   在这个系统中，每个组件只有一种自由度。