guide arm

例句：

1. 1.The robot's guide arm is moving smoothly.
   机器人的导向臂正在平稳移动。
2. 2.The guide arm helped me to find the right path.
   导向臂帮助我找到了正确的路径。
3. 3.The guide arm was designed to assist with navigation.
   导向臂被设计用来辅助导航。