head support arm

例句：

1. 1.The new car has a head support arm that adjusts the driver's seat height.
   这款新车有一个可以调整驾驶员座椅高度的头支撑臂。
2. 2. The robot's head support arm is designed to help it navigate through tight spaces.
   机器人的头支撑臂设计用来帮助它穿过狭窄的空间。
3. 3.The engineer used a head support arm to stabilize the damaged part of the machine.
   工程师使用头支撑臂来稳定机器受损的部分。