【动物】(产于美国东南部和密西西比河流域的)美洲淡水大鳖,大鳄龟(Macroclemys temmincki);1790~1800]

The cormorant gives up for now. The bird has been foiled by the clarity of the water, the very thing that enables the manatee to thrive. The light through these waters helps plants flourish, and manatees are strict vegetarians. They can eat a hundred

发表于:2018-12-03 / 阅读(46) / 评论(0) 分类 自然百科2009年

Our next amazing rescue proves that working in an isolated and wild environment can be a risky endeavor. The llano s or wetlands of Venezuela, National Geographic's Brady Bar, a wildlife biologist is working with Venezuelan scientist and conservation

发表于:2018-12-05 / 阅读(35) / 评论(0) 分类 国家地理2007年

Alligator wrestling 鳄鱼摔跤 Deep in the jungles of Australia lives, perhaps, the bravest man in the world. His name is Dude. Yes, just Dude. Dude wrestles alligators. He wrestles for fun and for money. People come from all over the world to watc

发表于:2018-12-31 / 阅读(40) / 评论(0) 分类 英语小达人

This is scientific Americans 60-Second Science, I am Karen Hopkin, this will just take a minute. Time for another episode of those amazing alligators. On March 14th, we told you how gators use their lungs to steer through the water. Now, Louisiana bi

发表于:2019-01-08 / 阅读(55) / 评论(0) 分类 Scientific American(四)月

This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. If youve ever been to the everglades or tuned into the animal planet, you know that gators can move through the water oh, so silently barely creating a rip

发表于:2019-01-08 / 阅读(50) / 评论(0) 分类 Scientific American(三)月

This is Scientific American's 60-Second Science. I'm Steve Mirskey, Got a minute? Here is another reason to stop global warming to keep the Burmese pythons in Florida. Burmese pythons have been turning up in south Florida in recent years. Perhaps you

发表于:2019-01-08 / 阅读(56) / 评论(0) 分类 Scientific American(三)月
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