Many are large animals, such as rhinos, tapirs, elephants, dugongs and manatees.
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。
I had often watched manatees in these warm coastal waters, but I'd never seen one act like this before.
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。
For instance, how terrestrial mammals moved back into the water and evolved into whales, seals and manatees continues to puzzle Fish and colleagues.
例如，陆地哺乳动物如何回到水中，进化成鲸鱼、海豹和海牛呢？这一问题一直让Fish和他的同事困惑不解。
Unlike the skin of whales and manatees, shark skin doesn't pick up algae or barnacles. This seems to be due to little scales called "dermal denticles."
与鲸类和海牛这些海生哺乳动物不同，鲨鱼的皮肤不会附生海藻或藤壶，这可能要归结于其皮肤上被称之为“肤齿”的微小鳞屑。
Their Web site raises awareness of the threats to dolphins and manatees from pollution and trash, fishing nets, collisions with boats and jet skis, habitat loss, disease and other dangers.
他们的网站增加了人们对海豚和海牛受到的环境威胁的认识，例如：污染、垃圾、鱼网、船以及水上摩托撞击、栖息面积减小以及疾病，等等。
We're trying to save manatees!
我们正尽力挽救海牛！
We're trying to save the manatees.
我们设法拯救海牛。
We're trying to save the manatees!
我们正在设法拯救海牛！
There used to be a lot of manatees.
海牛的数量曾经很多。
There used to be a lot of manatees.
这里以前曾经有很多海牛。
Gentle and slow moving, manatees are said to be the mythical mermaids of sailors' imaginations.
缓慢而优雅的移动着的海牛据说就是海员幻想中神话般的美人鱼。
Gentle and slow moving, manatees are said to be the mythical mermaids of sailors' imaginations.
海牛游动温和而缓慢，被认为是海员遐想中富有神秘色彩的美人鱼。
It has been widely suggested or implied that manatees or dugongs could be behind the myth of the mermaid.
美人鱼之谜背后，有人猜测是海牛，亦有人暗示是懦艮(一种海里的哺乳动物)。
SAILORS of old sometimes mistook manatees for mermaids, which shows how months at sea quaffing rum and missing female company can cloud one's vision.
古时的水手曾误把海牛认作美人鱼，实可说明数月在汪洋大海上豪饮朗姆，缺乏女性陪伴的生活是如何让人严重眼花。
The Belize Barrier reef is one of the most diverse reef ecosystems in the world, home to whale sharks, rays, and manatees as well as sturgeon, conch and spiny lobsters.
伯利兹大堡礁是世界上最多样化的珊瑚礁生态系统。它是鲸鲨、鳐鱼、海牛以及鲟鱼、海螺和多刺的龙虾们的栖息地。
Manatees, aquatic mammals inhabiting Florida's rivers and coastal waters, swim close to the surface and are frequently killed in collisions with boats.
海牛是生活在佛罗里达河流和沿海水域的水生哺乳动物，它们游到海面附近，经常在与船只相撞时被撞死。
Manatees, aquatic mammals inhabiting Florida's rivers and coastal waters, swim close to the surface and are frequently killed in collisions with boats.
海牛是生活在佛罗里达河流和沿海水域的水生哺乳动物，它们游到海面附近，经常在与船只相撞时被撞死。
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