雨后天晴,在天空中有时会出现彩色的圆弧,这就是“虹”。红色在外、紫色在内,颜色鲜艳的叫“虹”,也叫“正虹”;红色在内,紫色在外,颜色较淡的叫“霓”,也叫“副虹”。同样是与水气变化有关的自然现象,“虹”字不像“雲”“雷”“電”“霜”“雪”“雹”等字从“雨”得义,而是以“虫”表义,而且“虹”的异体字如“(?)”“(?)”“(?)”等也都从“虫”,“霓”字过 Fine weather after the rain, in the sky sometimes appear colored arcs, this is “rainbow.” Red, purple, brightly colored, called “rainbow”, also known as “Zhenghong”; red, purple, the lighter color called “Ni”, also known as “Vice Rainbow.” The same is a natural phenomenon associated with changes in water and vapor, “Rainbow” is not like “cloud”, “mine”, “electricity”, “frost” “snow”, “hail” and other words from the “rain” Meaning, and “rainbow” variant characters such as “(?)” “(?)” “(?)” Also from the “worm”, “Ni”