We are diurnal creatures, with eyes adapted to living in the sun's light.

我们是白天活动的生物，眼睛已经适应了在阳光下的生活。

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This is called "dark adaptation" and it takes your eye up to an hour to become fully adapted to seeing in low light conditions.

这就叫做“暗光适应”。你的眼睛花上一个钟头就可以完全适应光线暗淡的环境。

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The team speculated that, over time, cichlid eyes adapted to either the bluish or the reddish ambient light, depending on where they lived.

研究小组推测，随着时间的过去，丽鱼科鱼的眼睛适应于周围浅蓝色或者淡红色的光线，随它们游到什么位置而定。

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She added that the charity was in talks with light bulb manufacturers who had been "fantastic" and trials were planned later this year to try to see "if any of the new light bulbs could be adapted to be suitable".

BBC: Bulb bows out to mixed applause

It would also need completely new engines, rather than adapted existing ones, in order to be sufficiently light and economical.

ECONOMIST: Boeing v Airbus

David Souter, from ICT Development Associates, praised the UNESCO study for linking freedom of expression and privacy rights in the light of a constantly changing Internet in which many people have not adapted their behavior to new privacy threats.

UNESCO: MEDIA SERVICES