不过鲎的习性尚未为人所知。
鲎的血淋巴系统由心脏、血管和血淋巴液组成。
The hemolymph system of horseshoe crab is composed of heart, blood vessels and hemolymph liquid.
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.
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