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.
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。
"The rainbow bridge is broken," joked one Facebook user, while another person asked: "is this a case of Monday Rainbows?"
“彩虹桥断了，”一个脸书用户开玩笑，而另一个人问：“这是星期一彩虹手机壳吗？”
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