Other features, however, show experts that Pakicetus is a transitional form between a group of extinct flesh-eating mammals, the mesonychids, and cetaceans.
然而，专家认为巴基鲸是已经灭绝的食肉哺乳动物中爪类和鲸类之间的过渡物种。
Mercury levels at more than two-thirds of the sites exceeded what scientists believe fish-eating mammals, such as mink and otters, should ingest.
三分之二选本中汞含量超过了科学家们认为水貂、水獭等以鱼为食的哺乳动物可摄入的含量。
The giant animals are estimated to have released, along with other large plant-eating mammals, around 9.6 million tonnes of the powerful greenhouse gas each year - more than 13, 000 years ago.
据估计，一万三千年前，巨大的长毛象和其他的食草动物每年释放出960万吨强大的温室气体。
With their soft skin, dolphins can also experience skin irritation from the oil, and eating tainted fish could poison the mammals.
另外海豚柔软的皮肤会受到油污刺激，吞食受污染的鱼也可能会对它们的身体造成毒害。
Animals such as cats, dogs and possibly other mammals can also become infected by eating infected dead birds; however, it is not yet known whether mammals can pass the virus back to live birds.
猫狗等动物可以应食用病死鸟类而感染该病，但哺乳动物是否会将该病毒传染给鸟类则不明确。
They kill by constriction; named for their practice of eating other snakes, they also take small mammals, amphibians, birds, and birds' eggs.
以缠绞方式杀死猎物，因也吃其它蛇类而得名，还取食小型哺乳动物、两生动物、鸟类和鸟蛋。
They kill by constriction; named for their practice of eating other snakes, they also take small mammals, amphibians, birds, and birds' eggs.
以缠绞方式杀死猎物，因也吃其它蛇类而得名，还取食小型哺乳动物、两生动物、鸟类和鸟蛋。
应用推荐