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

宏进化的一个例子是目的恐龙进化期间羽毛的出现。

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经济学人-科技

Frequently, these were taken by theropods.

这些恐龙经常被兽脚亚食肉恐龙捕食。

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VOA Special 2023年9月合集

These sizes are exceptional among theropods.

这种体型在兽脚亚恐龙中是罕见的。

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经济学人-科技

Instead of theropod footmarks, they found those of crocodilians.

他们发现的是鳄鱼的足迹,而不是兽脚类的。

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VOA Special 2023年3月合集

Some small theropods grew quickly and others grew slowly.

有些小型兽脚亚恐龙生长得很快,而另一些则生长缓慢。

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VOA慢英语_世界

Natovenator is part of the dinosaur group called theropods.

非鸟兽脚类恐龙是被称为兽脚亚恐龙群体的一部分。

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VOA慢英语_世界

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

他相还会发现更多奇特的兽脚亚恐龙。

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VOA Special 2023年9月合集

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

兽脚亚恐龙包括所有诸如暴龙之类的食肉恐龙。

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自然历史博物馆

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恐龙,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.

鸟是从侏罗纪晚期的兽脚亚恐龙进化而的。

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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恐龙的缺位。

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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.

像兽脚亚类恐龙一样,这些巨人使用气囊呼吸,而且有很轻的中空骨骼。

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当月 VOA Special English

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

这种有着锋利爪子的生物似乎自一种名为兽脚类的恐龙。

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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,即便是一头巨大的兽脚亚食肉恐龙也会不时回头张望。

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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,这种动物的近亲和几乎所有形似鸟类的兽脚亚恐龙都有羽毛。

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VOA慢英语_世界

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

“到白垩纪末,兽脚亚恐龙的多样性令人惊叹。”

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VOA慢英语_科技

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

所有已知的能测出度的脚印都自兽足亚恐龙家族。

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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.

当三角龙和剑龙长到八公尺长时,像暴龙这样的兽脚亚类恐龙长了两倍大。

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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,更大的、三趾的脚印自体型庞大的两腿植食动物--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,最新的研究“颠覆了”过去关于兽脚亚恐龙生长的想法。

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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.

很遗憾的是对于玛君龙和多数兽脚类恐龙说我们都没有很多标本。

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