???? ?????? ????? ??? ??? ??? ????? ??? ???? ???? ???? (??? ??? ?? ???? ?? ????? ?? ????? ?? ??? ???? ??? ?? ???Think of a vehicle driving in the evening. The headlights only go 100 or two hundred ft ahead, and you may make it all of the way from California to Big apple driving throughout the darkish, because all You will need to see is the followi