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Please turn on the light.

This room is very quiet, please turn off the light.

The traffic light is about to go out.

If you see a red light, then stop.

The power is out, we must find an electrician.

As soon as the sensor detects movement, the light brightens immediately.

The light is too dim to help us survive.

Since the light is dim, this maze is too dark to walk in.

I accidentally left the light switch on.

Don't forget to turn off the showerhead and the light switch.