Reflections from the background can reproduce as black dead zones. To prevent them, build a de facto light tent around your subject by completely surrounding it with lights, diffusers, and reflectors.

背景的反射光可能会造成画面出现死黑区域，为避免出现这种情况，应在被摄主体周围布满灯、柔光罩和反光板，事实上起到柔光棚的作用。

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A study by the Institute of Psychiatry in London has found out why - because eating ice cream can light up the brain's pleasure zones.

伦敦精神病研究所的一项研究找到了其中的原因——因为吃冰淇淋能激活大脑的快乐区。

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Some car efficiency experts have recommended making cars light but also large, with energy-absorbing crush zones.

一些研究汽车效率的专家建议制造重量轻但体型大的轿车，设置吸能碰撞区。

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But it also portrays them as full of hope, walking confidently through zones of dappled light toward shining futures.

WSJ: Bloated 'Beyond Borders' Sinks Saintly Characters

However, we now live in a time when there are video cameras at stop-light intersections, drones that patrol war zones, my iPhone can even find itself, so there has to be a better way to monitor felons (inmates) without having them housed on sprawling government complexes and on the government payroll.

FORBES: Here's an Idea To Reduce The Deficit - Release Some Federal Inmates

Mayor Rahm Emanuel is asking state lawmakers to allow Chicago to use red-light cameras to automatically ticket drivers who speed through school safety zones.

FORBES: Rahm Puts On the Red Light