英语听力:2013-07-14 《恐龙的战争》3 顽强防御—13
时间:2014-02-13 06:47:20
搜索关注在线英语听力室公众号:tingroom,领取免费英语资料大礼包。
(单词翻译)
…the equivalent of a human being with a brain the size of a pea. Lobes1 for both sight and smell are tiny. Areas controlling information analysis, learning, and complex thought are barely developed.
If you look at the size of their brain, you actually have to kind of wonder how these animals managed.
But they did manage. Physical size makes up for every other shortcoming. Surviving for 15 million years, these
mammoth2 creatures spread out across the globe onto every continent except Antarctica. But there’s another
dinosaur3 that doesn’t rely on size. It uses an even more unusual trick to stay alive, the most sophisticated communication system ever developed in the
prehistoric4 world.
It’s one
vegetarian5 that lacks any obvious weaponry. A Parasaurolophus is a duckbill.
Named for its ducklike
beak6, weighing in at almost four tons, it’s not tiny, but taking on a seven-ton
predator7 like a T-Rex would be suicide.
They have no
fangs8, no armor at all, no
spikes9 or horns anywhere on the body. They seem to be large, vulnerable targets.
Parasaurolophus range across a vast area more than 160,000 square kilometers from Alberta, Canada, to New Mexico, a region with more than its fair share of vicious
predators10.
What has puzzled all of us is, how did they protect themselves?
The most important clue to this mystery is buried inside their
skull11. Parasaurolophus has the biggest brain of all herbivores and one part of that brain is abnormally large—the area responsible for hearing …
分享到:
Error Warning!
出错了
Error page: /index.php?aid=246185&mid=3
Error infos: Got error 28 from storage engine
Error sql: select `l`.`tag`,`l`.`index`,`l`.`level_id`,`b`.`id`,`b`.`word`,`b`.`spell`,`b`.`explain`,`b`.`sentence`,`b`.`src` from `new_wordtaglist` `l` left join `new_word_base` `b` on `l`.`tag`=`b`.`word` where `l`.`arc_id`='246185' and `l`.`level_id`>='' group by `b`.`word` order by `l`.`index` asc