This is the equivalent of a human being scaling a waterfall 相当于人类去攀登
Their mouth rotates and acts like a kind of suction cup... 嘴部转动 如同一个吸盘
Surely an impossible journey for a fish. 对鱼来说 无疑是一处不可能的目的地
Freshwater here has a turbulent nature. 这里的淡水十分汹涌
All it took was a million years of evolution... 这一切需要生物百万年来的演化
A more subtle performance will be needed. 演技还需进一步打磨
into a dazzling diversity of species. 形成了此处千姿百态的丰富物种