夏日的暴雨过后,天空中偶尔会出现一道彩虹,有时甚至会有两道。看到如此美景,人们往往都会忍不住暗自欢喜。不过,彩虹是如何形成的呢?它真的只是我们通常看到的半圆形拱桥状吗?天空最多会同时出现几道彩虹?彩虹的出现意味着什么?想知道这些答案,就随下文一起走进彩虹的绚丽世界吧! After the summer heavy rains, a rainbow occasionally appears in the sky, and sometimes there are two. See such beauty, people often can not help but secretly happy. But how does a rainbow form? Is it really just a semicircular arch we usually see? There are at most several rainbow colors in the sky at the same time. What does it mean with the rainbow? If you want to know these answers, Into the rainbow of the magnificent world!