Under arm add-on to the seat

• 座位扶手

Under arm add-on to the seat的用法和样例：

例句

1. The head-set socket is on the armrest.
   耳机插孔在座位扶手上。
2. By pushing the button on the arm of your chair,you can make the back of the seat recline so that it's quite comfortable.
   按一下座位扶手上的按钮，你可把座椅靠背调节得后仰一些，这样比较舒适。