This means that, during the day, people on the outside of the window can't see in through the glass, while you can still see clearly through it from the inside.
Nke a pụtara, mgbe a na-etinye fim ndị a na windo na-eche ihu n'èzí, ndị mmadụ pụrụ ịhụ n'ime ụlọ ahụ n'oge oge ehihie, ma ndị mmadụ apụghị ịhụ n'ime ya ngwa ngwa.