"成虹"是个多义词，它可以指成虹（北京大学第一医院副主任医师）,成虹（成都工业学院教授）。
棱镜把阳光分解成虹的所有色彩。
The prism broke the light into all the colors of the rainbow.
月虹与白天出现的彩虹一样，是光通过水滴分解成多种色光后产生的，而光本身是由多种色光组成的。
Like a rainbow, its daylight equivalent, a moonbow is produced when light is broken up into its constituent colours as it passes through water droplets.
它的失望幻灭成泪水的虹。
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