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An example of macroevolution is the appearance of feathers during the evolution of birds from theropod dinosaurs.

宏进化是鸟类在兽角亚目进化期间羽毛出现。

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经济学人-科技

Frequently, these were taken by theropods.

这些经常被兽脚亚食肉捕食。

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VOA Special 2023年9月合集

These sizes are exceptional among theropods.

这种体型在兽脚亚中是罕见

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经济学人-科技

Instead of theropod footmarks, they found those of crocodilians.

他们发现足迹,而不是兽脚类

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VOA Special 2023年3月合集

Some small theropods grew quickly and others grew slowly.

有些小型兽脚亚生长得很快,而另一些则生长缓慢。

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VOA慢速英语_世界

Natovenator is part of the dinosaur group called theropods.

非鸟兽脚类是被称为兽脚亚群体一部分。

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VOA慢速英语_世界

He believes there will be more discoveries of peculiar theropods in the future.

他相信未来还会发现更多奇特兽脚亚

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VOA Special 2023年9月合集

The theropod group includes all the meat-eating dinosaurs like Tyrannosaurus.

兽脚亚包括所有诸如暴之类食肉

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然历史博物馆

We've described a new theropod dinosaur species, we called it Pendraig milnerae.

我们已经描述了一种新兽脚亚,我们命名它为 Pendraig milnerae。

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VOA Special 2023年9月合集

Birds evolved from a grouping of dinosaurs known as theropods in the late Jurassic.

鸟是从侏罗纪晚期兽脚亚进化而来

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经济学人-科技

But that does not completely explain the absence of theropod tracks.

但这并不能完全解释兽脚亚食肉缺位。

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透视百科综合类

Like the theropods, these titans used air sacs to breathe and had light, hollow bones.

像兽脚亚一样,这些巨人使用气囊来呼吸,而且有很轻中空骨骼。

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当月 VOA Special English

The creature, with sharp claws, appears to be from a group of dinosaurs called theropods.

这种有着锋利爪子生物似乎来一种名为兽脚类

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经济学人-科技

In that sort of environment even a big theropod would constantly have been looking over its shoulder.

在那样一种环境下,即便是一头巨大兽脚亚食肉也会不时回头张望。

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VOA Special 2023年9月合集

But, the animal's closest relatives and almost all bird-like theropods have feathers.

但是,这种动物近亲和几乎所有形似鸟类兽脚亚都有羽毛。

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VOA慢速英语_世界

He said, " The diversity of theropod dinosaurs by the end of the Cretaceous is totally amazing."

“到白垩纪末,兽脚亚多样性令人惊叹。”

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VOA慢速英语_科技

All the known sets of prints that show speed come from a family of dinosaurs called theropods.

所有已知能测出速度脚印都来兽足亚家族。

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透视百科综合类

While Triceratops and Stegosaurus grew up to eight meters long, bird-like theropods like Tyrannosaurus grew twice as large.

当三角和剑长到八公尺长时,像暴这样兽脚亚长了两倍大。

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当月 VOA Special English

Bigger, three-toed footprints came from large-bodied, two-legged plant-eaters called ornithopods or perhaps, the researchers say, a large theropod.

研究人员说,更大、三趾脚印来体型庞大两腿植食动物--鸟脚类动物,或者是一种大型兽脚类动物。

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VOA Special 2023年3月合集

D'Emic told Reuters news agency the latest research " overturns" past thinking about the growth of theropods.

德埃米克告诉路透社,最新研究“颠覆了”过去关于兽脚亚生长想法。

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侏罗纪搏击俱乐部

Unfortunately, for Majungasaurus and most theropod dinosaurs, we don't have a lot of specimens to work with.

很遗憾是对于玛君和多数兽脚类来说我们都没有很多标本。

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