标签：predators 相关文章
装死的负鼠 Playing dead doesn't seem like much of a strategy, but it works for the opossum, commonly known as the possum. The possum is a rather unglamorous creature. It has big, black eyes, a pale pointy face and a hairless tail, like a rat's.
大千世界
A new study suggests that social media sites have created a new phenomenon known as Facebook depression. The American Academy of Pediatrics recently warned parents about the possible dangers of networking websites on their childrens mental health. Re
创新英语
[00:00.00]2 The early bird catches the worm [00:04.80]The early bird may catch the worm-but people [00:07.60]who lie around in bed in the morning [00:10.06]and work into the evening are more intelligent, [00:13.28]according to Richard Roberts [00:14.
北师大版高中英语模块10(选修)
Hawaii's Birds Threatened by Invasive Predators, Habitat Loss Many people think of the Hawaiian islands as a Pacific paradise, a string of tropical islands lush with exotic flora and fauna. But the islands' native species - especially birds - have be
VOA标准英语2012年(七月)
Small carnivoreslike foxes or raccoons or badgersare themselves prey for larger predatorslike wolves. So they spend time hiding instead of hunting. This influence that big predators have on their ecosystem is called a landscape of fear. But humans ar
2016年Scientific American(八)月
This is Scientific American 60-second science.I'm Innmi Craft.Got a minute? Here's one way bites my get there next meal by ease dropping on flies having sex.That's eat a lot of seemingly undetectable flies.To find out how the winged memers find the i
Scientific American(七)月
Albert has been a Crip since age 12. He is one of the first generations of the Los Angeles based Gang, a group known as the Original Baby Gangsters. His seniority puts him near the top of the Crips' national hierarchy. Here in Lebanon, he runs a crim
国家地理2007年
Wildlife in South Africa As you first enter the bush, you'll no doubt be greeted by mischievous apes like the vervet monkey, the chacma baboon, often with a baby on its back. An almost guaranteed sigh
英语沙龙2004全年合辑上
1. John Edwards is continuing his bid for the presidency as his wife now battles cancer. Elizabeth Edwards stood by her husband's side in North Carolina, revealing her cancer has returned. She was first diagnosed at the close of the 2004 campaign. 2
美联社新闻一分钟2007
Is Cheetah Fast Enough to Survive?
2014年VOA慢速英语(十)月
These Olympic capabilities come down to one simple anatomical feature, its tail. Half the length of its body, it acts like a built-in counterbalance. By flicking it from side to side, it can make a sharp turn at full speed. If you were to look at Dei
探索与发现2013年
--The irony for many predators is they are very concerned about injuring themselves. Even the toughest most well-armed man-eaters regularly come face to face with prey that can kill them. Whether you had the jaws of a Tyrannosaurus Rex, or are armed
探索与发现2013年
Nothing this large would achieve powered flight until the 20th century, 65 million years later. And Quetzalcoatlus still may hold the record for flight duration. Probably stay aloft for a week. Probably it could have gone for 25, 26,000 miles in a si
探索与发现2013年
I think that a big pterosaur on the ground wouldve been spooky because they would be moving around on all fours. Theyd probably have those sort of quick, precise movements like birds, but theyd be huge. Quetzalcoatlus lives by its own rules. Most mea
探索与发现2013年
Mighty carnivores ruled a dangerous world in the Cretaceous Period. But being a super predator like Tyrannosaurus Rex is not easy. Just surviving to adulthood is a major feat, one that takes a decade or more of killing and eating some of the meanest
探索与发现2013年
The deep ocean has other sources of light than astronomical bodies, though. 除了天体，深海还有其他光源。 Three-quarters of marine organisms off the coast of California produce their own, and that is probably true in most oceans, 加利福
经济学人科技系列
Science and technology 科学技术 Animal behaviour 动物行为 Drip-feeding 滴定进食 Ecology raids the techniques of chemistry 生态学里应用上了化学技术。 Time to change restaurant 该换家馆子了。 BIOLOGISTS are sometimes acc
经济学人科技系列
GWEN IFILL: Now we turn to another angle of our continuing of climate change and its impact. Tonight, our science team looks at the toll it is taking on sea turtles and some of their tiniest offspring. We went to the coast of Southern Florida and cam
PBS访谈环境系列
SCOTT SIMON, HOST: Efforts to remove the gray wolf from the endangered species list across most of the lower 48 states hit a hurdle yesterday. A U.S. Fish and Wildlife Service panel said the scientific research is insufficient to make a decision. The
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