To generate useful energy, plants have evolved very sophisticated "nano-machinery" which operates with light as its energy source and gives a perfect quantum yield of 100%.

为了产生有效能，植物进化出了异常精密的“纳米机器”，它以光为能量来源，光能转化率达到了完美的100％。

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Each source of light is a different color, and the bizarre quality of the different lights sets a perfect mood for a picture of Las Vegas.

各个光源的颜色均不相同，而不同光线的怪异质感营造的氛围正好是拉斯维加斯的完美写照。

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They began to search actively for the signal, eventually achieving perfect scores in tracking and identifying the correct location of the invisible light source.

BBC: Lab rats 'acquire sixth sense'