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英语新闻视频
Thats what it wants to hear, because that sound is gonna mean thats where lunch is. A battle with Triceratops is more often than not a fight to the death. This herbivore has evolved into a tank. Now, as a Tyrannosaur specialist, I dont like to admit
探索与发现2013年
Tyrannosaurus Rex was of ten thousand pound, self-propelled, antitank weapon. Now, sixty five million years later, cutting-edge imaging technology lets us look deep inside their bodies to reveal just how the worlds greatest carnivores really work. Di
探索与发现2013年
The jaws of T-Rex are infamous and lethal, housing sixty teeth with some as long as 30 centimeters. Its skull is constructed of 64 bones designed to be light but strong. Its 16 times stronger than the jaws of an alligator. The front teeth are dagger-
探索与发现2013年
Hearing, smell and sight are all well refined. We can look at the sense of vision and see the attributes of a predator. T-Rexs eyes are 40 centimetres apart providing exceptional binocular vision, the ability to perceive depth. An eye is essentially
探索与发现2013年
Sauroposeidon towers over Deinonychus. In fact, its mammoth size is its primary defense. But this giant begins life very small. For Deinonychus, Sauroposeiden would be a great meal, at least the juveniles, because there wouldve been lots of them and
探索与发现2013年
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
They are actually increasing their chance of getting a meal. Its a strategy still used today. Working together, lions will take on prey as big as a four-ton elephant, and they only have teeth and claws. Deinonychus employs an array of weaponry more p
探索与发现2013年
Picture a living plane, and that gives you a sense of what Quetzalcoatlus would look like in life. And this is an animal that probably accelerates over 2.5Gs just on takeoff. Just beyond our comprehension. A Quetzalcoatlus is 10 times the weight of t
探索与发现2013年
propel this creature weighing as much as a grizzly bear, from a dead stop to a launch speed of 50 kilometers per hour all in a fraction of a second. I think that seeing a pterosaur like Quetzalcoatlus actually take off would have to be one of the mos
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
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
Other carnivores are even more dependent on cognitive thought. For protection, Deinonychus relies primarily on its brain. --The brain structure of Deinonychus and its role are just really quite remarkable. Relatively speaking, Deinonychus has one of
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 life I desired 我所追求的生活 That must be the story of innumerable couples,and the pattern of lifeof life it offers has a homely grace.It reminds you of a placid rivulet,meandering smoohtly through GREen pastures and shaded by pleasant tr
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本期内容： The feeling of success that is given through money and fame is only temporary and is not enough to sustain a long-term feeling of fulfillment and happiness. For a truly successful life, your intention has to be rooted in your purpose,
口语侠每日早读
介词after与behind的区别 两者均可表示在之后，其区别是： 1. after 主要用于时间或次序，behind 主要用于位置。如： He decided to leave after lunch. 他决定午饭后离开。 Summer comes after spring. 春去夏来。
英文语法词汇
In order to tell what I believe, I must briefly sketch something of my personal history. 为了阐明我的信仰，我必须简单介绍一下我的经历。 The turning point of my life was my decision to give up a promising business career and stu
英语美文
That must be the story of innumerable couples, and the pattern of life of life it offers has a homely grace. It reminds you of a placid rivulet, meandering smoothly through green pastures and shaded by pleasant trees, till at last it falls into the v
英语美文
ELI ROSENBAUM: The time pressures grow every year. Sometimes I say it's sort of like when we started, we were told, OK, run a four-minute mile and we did it. And then a few years later, they say, OK, you've got to run that mile but you've only got ab
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