free linkage

例句：

1. 1.The new design of the robot has a free linkage that allows it to move with greater flexibility.
   机器人的新设计具有无约束的链结，使其移动更加灵活。
2. 2.In the field of robotics, free linkage is a key concept in designing efficient and adaptable machines.
   在机器人学领域，无约束的链结是设计高效且适应性强的机械的关键概念。
3. 3.The engineers were able to adjust the free linkage of the robot to better suit their needs.
   工程师们能够调整机器人的无约束链结，以更好地满足他们的需求。