Turtles are thought to have exceptional night vision due to the unusually large number of rod cells in their retinas.

• 大意是说乌龟有很出色的夜视能力，因为它们的视网膜含有大量柱形细胞（柱形细胞专门帮助动物在黑暗和弱光环境内辨认物体）。