不管是走路还是坐车,太阳似乎永远都在跟着我们.你知道其中的原理吗?
Have you ever noticed that when you are in a car travelling on a straight road, the Sun appears to move right along with you?
Our eyes have a certain"range"of vision. You can see things only within that range. For example, you cannot see objects behind your head. This field of vision widens out from the point where you are. Objects further away are visible for a longer period.