标签：predators 相关文章
AS IT IS 2014-01-30 Business in the Final Frontier is Booming Hello, my friends, and welcome back. Im Jim Tedder in Washington. On todays program, we dream of traveling to other worlds as we gaze at the starry night sky. What was once just science fi
2014年VOA慢速英语(一)月
Effort Launched to Save Africas Lions The African Lion Environmental Research Trust, or ALERT, a conservation and restoration charity, is one of the organizations that will help to kick off the event. The non-profit organization said the lion is a na
VOA标准英语2013年(五月)
保护最后的海洋罗斯海 The Ross Sea is a vast and remote area of water and ice in the Southern Ocean off the frigid coast of Antarctica. It is also home to an unusually diverse and rich ecosystem, unique in its climate and geography, and one
VOA标准英语2016年(十二月)
Sleep is very ancient. In the electroencephalographic sense we share it with all the primates and almost all the other mammals and birds: it may extend back as far as the reptiles. There is some evide
新东方现代文背诵篇章
A rabbit might outrun a fox, but stalks of wheat arent making any quick getaways. Plants, for the most part, dont flee from predators. But some primitive marine plants are breaking the rules. Marine scientists at the University of Rhode Island School
Scientific American(十)月
'Creatures of Light' Glow in New Exhibit Of all the wondrous survival strategies natures creatures have evolved, one of the most dazzling is the ability of some animals to generate light to find their prey, avoid becoming prey and to attract a mate.
VOA标准英语2012年(四月)
Cleveland Women's Escape From Long Captivity Unprecedented The news that Amanda Berry, Gina DeJesus and Michelle Knight were alive and free - after being kidnapped a decade ago - sparked celebrations in their home town. Robert Lowery, with the Nation
VOA标准英语2013年(五月)
Public lands in the U.S. are managed with two goals in mind: protecting biodiversity and providing people with recreational opportunities, a chance to connect with nature. But sometimes those two goals are at oddsespecially if recreation, activities
2016年Scientific American(八)月
When they leave the safety of the mangroves, they must cross that sandy desert and many hazards waiting for them in the lagoon.This is a mantis shrimp. From his neatly capped barrow, he surveys the world with the most complex visual system known to s
自然百科2014年
Time for the mail bag. Let's see what we have. Dear A Moment of Science. Are aliens going to eat us? Signed, Frightened. Well, Frightened, that's more of a science fiction question. But science does have something to say here, and sometimes purely im
英语时差8，16
One giant short-faced bear is more than a match for two lions. But in this bitter climate, lions cant afford to go without a meal for long. A mammoth calf in its first winter is a tempting sight. But mammoths are attentive mothers and they have the b
探索与发现2012年
...plant material at a time, and were talking about something huge. Surprisingly, it isnt something huge which allows these giant herbivores to grow big enough to be all but invincible. In fact, its something incredibly small, and something meat eate
探索与发现2013年
populated by millions of odor receptors. Complicated, crazy-straw, tortuous nasal passageway that went from the nostrils, made several loops through the snout before it went down into the throat. Ankylosaurus supersensitive nose can pick up a carnivo
探索与发现2013年
Triceratops protects itself with a bony shield called a frill. They can fend off an attacker with a pair of one-meter-long swords. Youve got to crush it. The only way to deal with this huge, curved, cantilevered, composite armor is a crushing blow wi
探索与发现2013年
Here we have one of the greatest predators nature has ever produced and one of the greatest defenders nature has ever produced sparring of with some truly awesome weaponry. Theres nothing like that in the world today. Triceratops most effective defen
探索与发现2013年
In a prehistoric world, theres a war waging between herbivores and carnivores, and the plant-eaters are winning. They seem to break all of the rules. Theres nothing like them around today. For these plant-eating giants, survival relies on a battery o
探索与发现2013年
Sharks attack tourists at holiday resort 埃及红海海域鲨鱼出没攻击游客 What do you expect when you go on holiday? Probably to relax, have a good time and above all, stay safe. Sometimes natural disasters, such as a hurricane or an erupti
英语听力精选进阶版
In October of 2000, biologists on a research boat off the coast of Chile happened upon what seemed to be a group of sleeping whales. The sperm whales were completely still and hanging vertically in the water with their noses up toward the surface, an
英语时差8，16
Walking on penguin eggshells on this Moment of Science. Yael: Today, we're talking penguin eggs. Don: Why? Y: Penguins lay their eggs on hard surfaces near coastlines, or they might dig burrows if the soil permits. And because they're optimized for s
英语时差8，16
SCOTT SIMON, HOST: You might want to set aside your cornflakes for a moment now. Ed Yong writes in The Atlantic about a substance he says, quote, looks revolting but is also one of nature's more wondrous substances, unlike anything else that's been c
2019年NPR美国国家公共电台1月