7. You won't ever find feathers on a mammal or gills on a primate.
你在哺乳动物身上找不到羽毛，在灵长类动物身上找不到腮。
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8. Because fish look through water, their eyes are very different from a mammal.
因为鱼能透过水看东西，它们的眼睛与哺乳动物非常不同。
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9. I mean, Ambulocetus is a mammal that shows a sort of bridge between walking on land and swimming.
我的意思是，陆行鲸是一种哺乳动物，可以指明一个路上行走动物和水中游泳动物的清晰联系。
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10. The pronghorn, which resembles an antelope, though they are unrelated, is the fastest land mammal of the New World.
叉角羚与羚羊虽无亲缘关系，但却形似羚羊，它是新大陆速度最快的陆地哺乳动物。
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11. One bone was a piece of rib from a cow-sized mammal; the other, a leg bone fragment from a mammal the size of a goat.
一根骨头是来自牛一般大小的哺乳动物的肋骨；另一根是来自山羊一般大小的哺乳动物的腿骨碎片。
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12. The only clear explanation is that humans caused the extinction of the various mammal species through excessive hunting.
唯一明确的解释是人类的过度捕猎导致了各种哺乳动物的灭绝。
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13. Removing waterfowl-nest predators could affect songbird nesting success through subsequent increases in small-mammal populations.
清除水禽巢捕食者可能会通过随后小哺乳动物数量的增加影响鸣禽筑巢的成功。
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14. The coastal hypothesis suggests an economy based on marine mammal hunting, saltwater fishing gathering, and the use of watercraft.
沿海假说提出了一种以捕猎海洋哺乳动物、收集捕捞咸水鱼和使用船只为基础的经济模式。
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15. The only mammal added to the list this year was the Eastern Voalavo, a rodent that lives in the mountainous forests of Madagascar.
今年唯一被列入名单的哺乳动物是马达加斯加山鼠，一种生活在马达加斯加山区森林里的啮齿动物。
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16. The coastal hypothesis suggests an economy based on marine mammal hunting, saltwater fishing, shellfish gathering, and the use of watercraft.
海岸假说提出了一种以捕猎海洋哺乳动物、捕捞咸水鱼类、采集贝类和使用船只为基础的经济模式。
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17. Like when you walk outside on a hot day, you perspire, and your body cools itself down, a classic example of how a mammal regulates its own body temperature.
18. Humans arrived in the Kaliko Islands about 7,000 years ago, and within 3,000 years most of the large mammal species that had lived in the forests of the Kaliko Islands were extinct.
