生物学家们长期认为，两类鳍脚亚目动物，即海狮和海象，都是从一种陆地上的类似于熊的动物繁衍而来的。
Biologists have long maintained that two groups of pinnipeds, sea lions and walruses, are descended from response to similar environmental pressures.
如果约塞米蒂管理员可以卖熊罐给持有怀疑态度的公众，那么这是一个他们可以用荧光灯泡和混合动力汽车做出类似魔术的机会。
If Yosemite rangers can sell bear canisters to a skeptical public, there's a chance they can work similar magic with fluorescent bulbs and hybrid cars.
类似的足迹识别软件已经被用于为白犀牛、北极熊以及印度豹制作生物签名。
Similar footprint-recognition software has been used to create biometric signatures for white rhinos, polar bears, and cheetahs as well.
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