60秒科学:Mini T. Rex Recovered
Mini T. Rex Recovered
In a study in the journal Science, researchers announce the discovery of a dinosaur 1 125 million years older and one-nintieth the size of T. Rex, but having virtually the same body plan as the giant dino. Cynthia Graber reports.
Ask any young dinosaur fanatic 2 about the mighty 3 Tyrannosaurus rex and you’ll probably get a fairly accurate description: huge reptile 4, big head, powerful jaws 6, tiny little arms. Scientists had thought that the animal evolved its bizarre proportions as it grew to its gargantuan 7 stature 8. But in this week’s issue of the journal Science, paleontologist Paul Sereno describes a newly discovered miniature tyrannosaurid that evolved millions of years earlier—and has all the attributes of the larger one.
The tiny dino had been excavated 9 in Mongolia illegally and sold to a private collector. He contacted Sereno to evaluate the preserved tyrannosaurid. Sereno agreed to do so if the dinosaur was donated to science, and eventually returned to China.
The dinosaur is about nine feet long and had an estimated weight of only 150 pounds. But it’s all there—the tiny arms, the huge head, the large teeth and muscular jaw 5. A hundred-twenty-five million years later, that animal’s descendants had ballooned into an almost exact replica 10 more than 90 times larger. Sereno and his colleagues say the body plan must have been a successful structure for hunting prey—and ultimately thrilling dinosaur lovers everywhere.
—Cynthia Graber
- 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。
- Alexander is a football fanatic.亚历山大是个足球迷。
- I am not a religious fanatic but I am a Christian.我不是宗教狂热分子，但我是基督徒。
- A mighty force was about to break loose.一股巨大的力量即将迸发而出。
- The mighty iceberg came into view.巨大的冰山出现在眼前。
- 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。
- He delivered a right hook to his opponent's jaw.他给了对方下巴一记右钩拳。
- A strong square jaw is a sign of firm character.强健的方下巴是刚毅性格的标志。
- The antelope could not escape the crocodile's gaping jaws. 那只羚羊无法从鱷鱼张开的大口中逃脱。
- The scored jaws of a vise help it bite the work. 台钳上有刻痕的虎钳牙帮助它紧咬住工件。
- My gargantuan,pristine machine was good for writing papers and playing solitaire,and that was all.我那庞大的、早期的计算机只适合写文章和玩纸牌游戏，就这些。
- Right away,I realized this was a mistake of gargantuan proportions.我立刻意识到这是一个巨大的错误。
- He is five feet five inches in stature.他身高5英尺5英寸。
- The dress models are tall of stature.时装模特儿的身材都较高。
- The site has been excavated by archaeologists. 这个遗址已被考古学家发掘出来。
- The archaeologists excavated an ancient fortress. 考古学家们发掘出一个古堡。 来自《简明英汉词典》