成人论坛

S2 Ep 26. A very clever solution to a significant environmental problem based on a kingfisher鈥檚 eyelids. When the brightly coloured bird dives for food, its eyes are covered in a way that protects the kingfisher鈥檚 eyeballs, rather like swimming goggles protect ours. Architects have copied this design to help prevent soil erosion on the banks of the huge Three Gorges Dam in China.
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