人们发现，连续一年被关在黑暗的环境中的鲎仍然可以保持稳定的大脑活动节奏，这种稳定的节奏也使得它们的眼睛适应每日或明或暗的光线。
Horseshoe crabs kept in the dark continuously for a year were found to maintain a persistent rhythm of brain activity that similarly adapts their eyes on a daily schedule for bright or for weak light.
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。
The team speculated that, over time, cichlid eyes adapted to either the bluish or the reddish ambient light, depending on where they lived.
一旦你适应了水下20英尺的光线，看清了里面的景象，那么世上的其他任何东西你都不会觉得怪诞了。
Nothing in the world can be more bizarre than the sight you see when you get used to light under 20 feet.
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