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(单词翻译)
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute.
Triceratops, as the name suggests, were huge dinosaurs2 adorned3 with three horns on their heads. Scientists now say those horns may have been a sort of battle bludgeon. Andrew Farke is a curator at the Raymond M. Alf Museum of Paleontology in California. He became curious about that headgear. Farke and colleagues wanted to investigate whether Triceratops fought each other with their horns. Which posed a problem: obviously, we can’t go back in time to watch the animals interact. So the researchers resorted to some techniques out of a Cretaceous CSI.
They examined more than 400 museums specimens4 of Triceratops and another closely related one-horned dinosaur1 called Centrosaurus. They scanned the skulls6 for injuries around where Triceratops might have locked horns and wrestled7. Their assumption was that if the horns were just for display, both species would show few scars.
But the Triceratops had 10 times more skull5 injuries than their Centrosaurus cousins. The most likely explanation is that they probably jabbed each other in the head while fighting. The researchers published their findings in the journal Public Library of Science ONE. They also caution that the horns could have served more than one purpose—perhaps fighting and flaunting8.
Thanks for the minute for Scientific American's 60-Second Science. I'm Cynthia Graber.
1 dinosaur | |
n.恐龙 | |
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2 dinosaurs | |
n.恐龙( dinosaur的名词复数 );守旧落伍的人,过时落后的东西 | |
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3 adorned | |
[计]被修饰的 | |
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4 specimens | |
n.样品( specimen的名词复数 );范例;(化验的)抽样;某种类型的人 | |
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5 skull | |
n.头骨;颅骨 | |
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6 skulls | |
颅骨( skull的名词复数 ); 脑袋; 脑子; 脑瓜 | |
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7 wrestled | |
v.(与某人)搏斗( wrestle的过去式和过去分词 );扭成一团;扭打;(与…)摔跤 | |
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8 flaunting | |
adj.招摇的,扬扬得意的,夸耀的v.炫耀,夸耀( flaunt的现在分词 );有什么能耐就施展出来 | |
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