Manatees, aquatic mammals inhabiting Florida's rivers and coastal waters, swim close to the surface and are frequently killed in collisions with boats.
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3. 海牛完全以海藻为食，在捕猎水獭开始的十年里，斯特勒注意到，岛上的海牛似乎营养不良。
Sea cows were totally dependent on kelp for food, and within a decade of the onset of otter hunting, Steller noted that the islands' sea cows appeared malnourished.
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4. 实际上海牛看上去像巨型的水下鼻涕虫。
Manatees (also called sea-cows) actually look like giant underwater slugs.
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5. 一头海牛畅游在佛罗里达水晶河的淡水泉中。
A manatee swims in a freshwater spring in Crystal River, Florida.
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6. 这群海牛在我身边游了好几圈。
The group completed several more circuits.
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7. 海象的外形是从海牛物种里演化而成。
The shape of Walrus evolved out of the Manatee species.
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8. 仅由斯氏海牛构成的懦艮科的一个属。
A genus of the family Dugongidae comprising only Steller's sea cow.
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9. 一头友好的海牛可能会径自游向你，然后和你贴面。
A friendly manatee may swim right up and touch your face with his.
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10. 海牛体型大，皮肤灰色，生性温和害羞。
What do manatees look like? They are big and gray.
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11. 科学家们相信，美人鱼实际上是一种名叫海牛的动物。
It is believed by scientists that mermaids were actually an animal called the manatee.
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12. 海牛的数量曾经很多。
There used to be a lot of manatees.
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13. 我们设法拯救海牛。
We're trying to save the manatees.
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14. 有11所以所在州发现的一种濒危海洋动物——海牛为荣耀。
Eleven honor the manatee, an endangered sea animal found in that state.
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15. 濒临灭绝的佛罗里达海牛在佛罗里达州水晶河的越冬场所三姐妹泉。
Endangered Florida manatee at the Three Sisters Spring wintering site, Crystal River, Florida.
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16. 少量物种随时间保持全意识，这包括了熊猫王国和海牛。
A few species retained full consciousness over time, and this includes the Panda Kingdom and Manatee or Sea Cow.
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17. 它们中的许多都是大型哺乳动物，比如犀牛、貘、大象、儒艮和海牛。
Many are large animals, such as rhinos, tapirs, elephants, dugongs and manatees.
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18. 是海牛，从淡红色的海水和它动作的方式判断，它一定是遇到了麻烦。
It was a manatee, and by the looks of the reddish-colored water and the way it was thrashing, it was in trouble.
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19. 我穿过浅水区域，继续向它们走进，但同时，这2只海牛也向我游来。
I pushed on through the shoal water, but now the manatees were also moving toward me.
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20. 海牛，通常也称之为海中之牛，是唯一一种海洋食草哺乳动物。
The manatee, often called the sea cow , is the only exclusively herbivorous marine mammal.
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21. 在这片温暖的海域，我经常看见海牛，但是从没见过它们有这么怪异的举动。
I had often watched manatees in these warm coastal waters, but I'd never seen one act like this before.
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22. 海牛（正）经受各方面威胁的考验，从水上船只的骚扰到水下毒素。
Manatees struggle for survival as the result of a gantlet of threats, from watercraft strikes to toxins in the water.
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23. 海牛（正）经受各方面威胁的考验，从水上船只的骚扰到水下毒素。
Manatees struggle for survival as the result of a gantlet of threats, from watercraft strikes to toxins in the water.
