support arm

例句：

1. 1. The engineer designed a support arm to help the robot move around more easily.
   工程师设计了一个支撑臂来帮助机器人更容易地移动。
2. 2.During the construction of the bridge, workers used support arms to lift heavy materials.
   在建造桥梁的过程中，工人们使用支撑臂来举起重物。
3. 3. The new design of the support arm greatly improved the robot's stability and efficiency.
   新型支撑臂的设计大大提高了机器人的稳定性和效率。