outward rotator

例句：

1. 1. The surgeon used an outward rotator to repair the damaged bone.
   外科医生使用一个向外旋转器来修复受损的骨头。
2. 2. The outward rotator was responsible for controlling the movement of the arm.
   向外旋转器负责控制手臂的运动。
3. 3. The outward rotator is a crucial component in the operation of the joint.
   向外旋转器是关节操作中的关键部件。