此外，他们还担心“天空回散照射（sky shine）”的问题：房顶散发的辐射会被大气中的颗粒向下反射。
They were also concerned about “sky shine”: radiation emanating from the roof that’s reflected downward by atmospheric particles.
这一机制背后的原理其实很简单：Rails首先通过反射将控制器中的变量拷贝到一个容器中，其后又将该容器中的变量拷贝回视图实例。
The magic is actually quite simple: Rails uses reflection to copy controller variables into a collection, which is then copied back into the view instance.
这样的平面反射了大部分蝙蝠的声波，但是有一部分能量垂直撞击到表面上，声波回传至蝙蝠。
Such surfaces reflect most of the bats' echolocation energy away from it, but some energy hits the surface perpendicularly, sending an echo back directly beneath the bat.
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