This building features an art exhibit that has mirrors on the floor, the ceiling and three sides, and they have so many reflections that people say you can't tell what's real.

这座建筑的特色是一个艺术展览，在地板上、天花板上和三面墙上都有镜子，它们互相反射，人们分辨不出什么是真实的。

So after many times in between the two mirrors, and many reflections passing through the crystal, you end up with a very strong, narrow beam of light that is just one colour.

因此，在两面镜子之间经过多次反射，多次反射穿过晶体后， 你最终会得到一束非常强、很窄的光束，它只是一种颜色。