The explanation of the wandering moon mainly depends on the way the changing angles between the lines joining our eyes with the moon and with the trees or houses (reference points) along the road create the sensation that the moon is moving with us as we walk along.
溜月亮的例子主要在說明自己眼睛和月亮之間連成的線，以及眼睛和沿路上的大樹或房舍（參考座標）連成的線，由於這兩條線、三個點（月亮、大樹、眼睛）之間形成的角度，隨著人向前走而不斷改變，我們才會感覺月亮跟著人走。