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。
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。
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.
应用推荐