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在室内门边或窗台上放置一小脸盆水,当太阳光从室外照射到水面上时,再将一普通生活用镜倾斜地放入水中,镜面朝上,并适当地加以调整,便可以在墙壁或天花板上看到一条彩色的光带。
Place a small basin of water on the side of the interior door or on the window sill. When sunlight hits the surface of the water from the outside, place an ordinary life into the water with a tilted mirror, with the mirror face up, and adjust it appropriately. See a colored strip of light on the wall or ceiling.