三角恐龙牙齿的复杂性
文章来源:未知 文章作者:enread 发布时间:2015-06-08 07:06 字体: [ ]  进入论坛
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When it comes to the three-horned dinosaur1 called the Triceratops, science is showing the ancient creatures might have been a little more complex than we thought. In fact, their teeth were far more intricate than any reptile2 or mammal living today. 
 
Biological Science Professor Gregory Erickson and a multiuniversity team composed of engineers and paleontologists content that the Triceratops developed teeth that could finely slice through dense3 material giving them a richer and more varied4 diet than modern-day reptiles5
 
Erickson and the team outlined the findings of their study in the journal Science Advances. 
 
Today, reptilian6 teeth are constructed in such a way that they are used mostly for seizing food -- whether plant or animal -- and then crushing it. The teeth do not occlude7 -- or come together -- like those of mammals. In essence they can't chew. The teeth of most herbivorous mammals self wear with use to create complex file surfaces for mincing8 plants. 
 
"It's just been assumed that dinosaurs9 didn't do things like mammals, but in some ways, they're actually more complex," Erickson said. 
 
Erickson, who has been studying the evolution of dinosaurs for years, became interested in looking at dinosaurs' teeth several years ago and suspected that they had some unique properties. But, the technology to really discover what they were capable of did not exist.


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1 dinosaur xuSxp     
n.恐龙
参考例句:
  • Are you trying to tell me that David was attacked by a dinosaur?你是想要告诉我大卫被一支恐龙所攻击?
  • He stared at the faithful miniature of the dinosaur.他凝视著精确的恐龙缩小模型。
2 reptile xBiz7     
n.爬行动物;两栖动物
参考例句:
  • The frog is not a true reptile.青蛙并非真正的爬行动物。
  • So you should not be surprised to see someone keep a reptile as a pet.所以,你不必惊奇有人养了一只爬行动物作为宠物。
3 dense aONzX     
a.密集的,稠密的,浓密的;密度大的
参考例句:
  • The general ambushed his troops in the dense woods. 将军把部队埋伏在浓密的树林里。
  • The path was completely covered by the dense foliage. 小路被树叶厚厚地盖了一层。
4 varied giIw9     
adj.多样的,多变化的
参考例句:
  • The forms of art are many and varied.艺术的形式是多种多样的。
  • The hotel has a varied programme of nightly entertainment.宾馆有各种晚间娱乐活动。
5 reptiles 45053265723f59bd84cf4af2b15def8e     
n.爬行动物,爬虫( reptile的名词复数 )
参考例句:
  • Snakes and crocodiles are both reptiles. 蛇和鳄鱼都是爬行动物。 来自《简明英汉词典》
  • Birds, reptiles and insects come from eggs. 鸟类、爬虫及昆虫是卵生的。 来自《现代汉英综合大词典》
6 reptilian tWfxx     
adj.(像)爬行动物的;(像)爬虫的;卑躬屈节的;卑鄙的n.两栖动物;卑劣的人
参考例句:
  • The chick is ugly and almost reptilian in its appearance. 这只小鸡长得很丑,看起来几乎像个爬行动物。 来自辞典例句
  • Being from Orion do Zetas contain DNA from the Reptilian race? 齐塔人是从猎户座而来,DNA来自爬虫族吗? 来自互联网
7 occlude t5ZzK     
堵塞
参考例句:
  • The tourniquet should occlude venous and lymphatic return.止血带应阻断静脉及淋巴回流。
8 mincing joAzXz     
adj.矫饰的;v.切碎;切碎
参考例句:
  • She came to the park with mincing,and light footsteps.她轻移莲步来到了花园之中。
  • There is no use in mincing matters.掩饰事实是没有用的。
9 dinosaurs 87f9c39b9e3f358174d58a584c2727b4     
n.恐龙( dinosaur的名词复数 );守旧落伍的人,过时落后的东西
参考例句:
  • The brontosaurus was one of the largest of all dinosaurs. 雷龙是所有恐龙中最大的一种。 来自《简明英汉词典》
  • Dinosaurs have been extinct for millions of years. 恐龙绝种已有几百万年了。 来自《简明英汉词典》
TAG标签: teeth plants mammals
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