A good roadway illumination requires the LED street light to have a rectangular light distribution pattern just cover the roadway and without any light pollution out of the road.

良好的道路照明要求LED路灯的配光为长方形的光型，路灯发出的所有光刚刚可以覆盖住马路，而马路之外的光污染几乎为零。

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Because the flash must survive multiple reflections without being absorbed or becoming too weak, not just any light can be used. It must be a laser.

因为闪光必须在反射若干次后不被吸收或者变得太弱，所以不是所有的光都可以用，必须是激光。

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Besides being light, it does not suffer from any memory effect, which is the loss in capacity when a battery is recharged without being fully depleted.

除了它比较轻之外，它不受任何记忆效应的影响——电池没有耗竭就充电会导致容量上有损失，这种效应称为记忆效应。

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Torrey says it was no small feat composing shots of the ruins without any tourists in the frame, but even more difficult was chasing the ever-changing angles of natural light.

VOA: standard.2009.12.15

Fuller mentions just about everyone in post-war Hollywood, without casting new light on any of them.

ECONOMIST: American film

It looked at vegetables such as carrots, lettuce and spring onions which were grown close to or in contact with the soil and which were sold to be consumed without any further cooking or preparation other than light washing or scraping.

BBC: Carrots

That night she fell asleep in her car without any answers but the following day, the proverbial light bulb went off.

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