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(单词翻译)
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.
If you saw the movie March of the Penguins1, or even the animated2 film Happy Feet, you know that male penguins take their role as parents pretty seriously. Now, a study from Montana State University shows that being a dutiful dad is something even dinosaurs4 did.
The scientists examined the fossilized remains5 of three different kinds of two-legged dinosaurs, which are thought to be the ancestors of modern birds. They focused on fossils in which an adult animal was found perched atop a clutch of eggs. And they found that the creatures that died while sitting on a nest did not seem to be female. Lady birds store the minerals they need for building egg shells inside their hollow limb bones. But these dinos did not have that mineral-rich bone tissue, which suggests they were males, results that appear in the December 19th issue of the journal Science.
These dino dads were probably polygamous, the scientists say, because their bones were found on top of some pretty big clutches. So it seems they may have wooed multiple mates, and were then left in charge of a veritable dinosaur3 day care center, filled with their various girlfriends’ eggs. Which they somehow apparently6 kept from getting scrambled7.
Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.
1 penguins | |
n.企鹅( penguin的名词复数 ) | |
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2 animated | |
adj.生气勃勃的,活跃的,愉快的 | |
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3 dinosaur | |
n.恐龙 | |
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4 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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5 remains | |
n.剩余物,残留物;遗体,遗迹 | |
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6 apparently | |
adv.显然地;表面上,似乎 | |
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7 scrambled | |
v.快速爬行( scramble的过去式和过去分词 );攀登;争夺;(军事飞机)紧急起飞 | |
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