Any animal that lives in a cave has to cope with complete blackness, 住在洞穴里的动物都必须 适应彻底黑暗的环境
and that he therefore is the best father a female could have for her young. 以此来证明自己将是最好的父亲 雌江豚为了孩子就应该选它
that it can support fresh water dolphins. 为淡水海豚提供了生存条件
The water here is just too cold for the bacteria that normally decompose the dead. 由于湖水过于寒冷 分解尸体的细菌很难在此存活
Early explorers told tales of lakes that smoked, as if on fire. 早期探险家看到这种湖面上“冒烟”的情景 还以为是湖底着了火
Any cichlid that trenches out will be snapped up. 一旦慈鲷切入电场 立刻就会成为捕食的对象
giants that grow over five metres long. 这些大怪物能长到5米多长
brings huge quantities of food into these high rivers that normally struggle to support much life. 于是这些平常只能勉强维持众多动物生计的 高山河流终于有了提供饕餮大餐的机会
But catching salmon in deep water is not that easy 但要想在深水中捕获鲑鱼可不太容易