Our cursorial dinosaur is Ornithomimus, so B is the correct answer.

我们的游标恐龙是似鸟龙，所以 B 是正确答案。

Deinocheirus' arms would've dwarfed those of Ornithomimus.

Deinocheirus 的手臂会使 Ornithomimus 的手臂相形见绌。

And the biggest Ornithomimus had an overall body length of about 3.8 meters.

而体型最大的似鸟龙全长约3.8米。

Regardless, while Deinocheirus was an ornithomimosaur through and through, it didn't just look like a scaled-up Ornithomimus.

无论如何，虽然恐手龙是彻头彻尾的似鸟龙，但它看起来不仅仅是放大的似鸟龙。

And we’ve found a few dinosaur fossils that contain fossilized skin and feathers, like an Ornithomimus fossil discovered in 2009.

我们还发现了一些包含化石皮肤和羽毛的恐龙化石，例如 2009 年发现的似鸟龙化石。

Large sauropods had very graviportal limbs, like this Argentinosaurus, while many theropods had legs built for running, like this Ornithomimus.

大型蜥脚类动物的四肢非常重，例如阿根廷龙，而许多兽脚亚目恐龙的腿是为奔跑而设计的，例如似鸟龙。

As early as 1969, paleontologists had noticed that the hands and upper arm bones of Deinocheirus looked a lot like those of Ornithomimus, a dinosaur from the Late Cretaceous of North America.

早在 1969 年，古生物学家就注意到恐手龙的手部和上臂骨骼与北美白垩纪晚期的似鸟龙非常相似。