1.To bring out the moonbow, an exposure of 30 seconds was needed, making the picture appear as if it was taken during the day.
为了能让月虹正常显像，需要30秒的曝光时间，所以照片看上去像是在白天拍的。
2.A moonbow (also known as a lunar rainbow or white rainbow) is a rainbow that occurs at night.The moon is a neutral color and reflects the same spectrum as the sun.
核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
彩虹也没有黑色。。。。不过，它的背景可算是其中一个颜色。对吧？
