The holograms, which direct the flow of light, were specially created to send light in certain directions and shapes.

全息图，用来导引光的流动，专门创建来输送某种方向和形状的光线。

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Even invisibility now looks almost possible using a new type of material that can direct light to flow around an object as though it were not there.

甚至隐形现在也几乎成为可能：一种新型材料可以引导光线在物体四周流动，使得物体看起来就像不存在一样。

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These are tiny particles that have a crystal structure which influences the flow of photons, the particles of light.

一些很小的颗粒都有晶体结构，能够影响光子，光的微粒的流动。

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Sopheng had kindly arranged to be my guide for the rest of my stay, and over the next two and a half days, through an ever-changing flow of sunshine, light showers and deluging downpours, he went far out of his way to give me an exceptional tour of Banteay Chhmar.

BBC: Piecing together puzzles in Cambodia

He said the company's cash-flow and net subscriber additions were "light" while turnover among customers was "heavy, " an uncomforting combination.

FORBES: Vonage Faces New Peril

The company ramped spending in acquired businesses and combined with light top-line drove EPS and cash flow below our estimates.

FORBES: Connect