removable orthodontic appliance

例句：

1. 1.The adjustable desk chair is removable, which makes it easy to move around the room.
   这款可调节的办公椅是可移动的，使得在房间内移动变得容易。
2. 2. The new car has a removable roof, which can be opened for ventilation during hot weather.
   新款汽车有一个可拆卸的顶棚，可以在炎热的天气中打开进行通风。
3. 3.The removable parts of the machine make it easier to fix and maintain.
   机器的可拆卸部件使得维修和保养变得更加容易。