我利用不同颜色的光照射晶体，冰晶结构就像复杂的棱镜一样将光线折射到不同的方向。
I use different types of colored lights shining through the crystals, so the ice structures act like complex lenses to refract the light in different ways.
漫射光色反射从一个方向来的光，因此对于径直照射的表面来说就比仅是光线斜射过的表面更为明亮。
Diffuse color reflects light that comes from one direction, so it's brighter if it comes squarely down on a surface that if it barely glances off the surface.
这样可以使叶片边缘避免受到正午阳光的直接照射，同时在早晚还可以充分利用东西方向较弱的光线。
Such plants thus avoid receiving the strong midday rays of the sun directly on the leaf blades, but are positioned to use fully the weaker rays of the morning and evening sun from the east and west.
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