high low lamp

例句：

1. 1.The high and low lamps flickered in the darkness.
   高低灯在黑暗中闪烁。
2. 2. He hung a high low lamp on the wall to add some light.
   他在墙上挂了一盏高低灯来增加一些光线。
3. 3. The high and low lamps were the only source of light in the room.
   高低灯是房间里唯一的光源。