• 1. ceiling switch: 天棚开关 | 天棚拉线开关 | 拉线开关 | 顶棚拉线开关
• 2. ceiling pull switch: 顶棚拉线开关

• 1.In your house, wires run in the wall, from the light switch to a junction box in the ceiling and from the junction box to the light bulb.
  在屋内，电线被嵌在墙壁里，从电灯开关到天花板里的接线盒，再从接线盒到灯泡。
  dict.yoduao.com

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