该疾病能够在不同的哺乳类物种之间传播。
The disease can spread from one mammalian species to another.
相对立的观点则认为哺乳类和鸟类在恐龙灭绝之后才成功并演化为各种不同的物种。
The opposing view is that mammals and birds did not become successful and radiate into many different species until after the demise of the dinosaurs.
这项发现也隐隐地证明虱子的哺乳类和鸟类宿主在恐龙统治结束之前已经开始繁盛并进化出新物种。
The finding implies that their hosts, both mammals and birds, had also begun to flourish and speciate before the reign of the dinosaurs was over.
除了这种狼之外，实在没有一个单一的哺乳类动物物种是原产于福克兰群岛的，该群岛位于南美洲东南端300英里外。
Indeed, not a single mammal species other than the Wolf was native to the Falkland Islands, located 300 miles off the southeastern tip of south America.
雪貂是另一种已知易受感染的哺乳类动物物种。
Ferrets are another mammalian species known to be susceptible to infection.
而另一类哺乳类海洋掠食物种——海豚——则是使用声音去“察看”那些几乎没有光线照射到的地方。
Those other mammalian Marine predators, the dolphins, use sound to "see" in places where little light penetrates.
研究人员们最近估计，到本世纪中叶，哺乳类动物的物种数量将从目前的5500种上升至7500种。
Researchers recently estimated that the total mammal species count will rise from about 5, 500 now to 7, 500 by mid-century.
研究人员们最近估计，到本世纪中叶，哺乳类动物的物种数量将从目前的5500种上升至7500种。
Researchers recently estimated that the total mammal species count will rise from about 5,500 now to 7,500 by mid-century.
我们的胖小子，使人类成为陆栖哺乳类中独一无二的物种。
通过对全球物种进行调查，发现有三分之一的两栖物种受到威胁，鸟类有12%受到威胁，哺乳类有22%受到威胁，另外还有其他物种。
One third of the amphibious animals are threatened, while this figure for avifauna is 12%, and that for mammal is 22%, according to a survey of the global specimens.
通过对全球物种进行调查，发现有三分之一的两栖物种受到威胁，鸟类有12%受到威胁，哺乳类有22%受到威胁，另外还有其他物种。
One third of the amphibious animals are threatened, while this figure for avifauna is 12%, and that for mammal is 22%, according to a survey of the global specimens.
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