侏羅紀搏擊俱樂部 第157期:兩足運動和四足運動

So when we find all these shed teeth of Albertosaurus in Pipestone Creek, it shows us that the Albertosaurus were scavenging, just as any decent meat eater will do, it's meat that doesn't fight back.

所以當我們在派泊斯通溪發(fā)現(xiàn)這么多阿爾伯特龍牙齒時，這就說明阿爾伯特龍在進食腐肉，就像所有得體的肉食者都會做的那樣，它的肉不會反擊。

Pachyrhinosaurus and Albertosaurus, they were both very large, and that large size immediately confers a great amount of strength.

腫鼻角龍和阿爾伯特龍體型都很大，而巨大的體型當然意味著有很強的體力。

Neither of them were particularly delicate animals, but certainly of the two, Albertosaurus was certainly that the more delicate.

它們都不是非常纖巧的動物，不過當然在兩者之中，阿爾伯特龍肯定更纖巧一些。

It had relatively long legs and it only walked around on two of them.

它的腿相當修長，而且它只用兩足行走。

And so consequently Albertosaurus was in greater danger of having catastrophic damage take place.

因此就是阿爾伯特龍相對來說更可能受到災難性的傷害。

Pachyrhinosaurus though was a more compact quadrupedal kind of animal, a more sturdy build than what we see in Albertosaurus.

腫鼻角龍是一種更結實的四足動物，比阿爾伯特龍身體更加粗壯。

Albertosaurus was a forerunner of the T-Rex.

阿爾伯特龍是霸王龍的前身。

It had more functional arms, but its head was smaller and less powerful, so it had to use its relatively short arms to help it catch prey, a less efficient method.

它的前肢用途更大，不過頭部更小，力量稍弱，所以它得要用它相對較短的前肢來輔助捕獲獵物，這種方法效率沒那么高。

Albertosaurus has these long slender legs, it's got the shock absorbing foot.

阿爾伯特龍有修長的腿，腳部能夠吸收震動。

It would have been among the fastest bipedal animals in the history of the world at least for big animals.

是世界歷史上最快的兩足動物之一，起碼對于在大型動物來說是。

Pachyrhinosaurus, not so much.It would have been fast as far as a quadrupedal dinosaur goes, but that's nowhere near as much as a Tyrannosaur would have been.

腫鼻角龍就沒那么厲害。在四足恐龍當中，它還算快的，不過跟暴龍完全沒法比。

There are two forms of locomotion in dinosaurs, there is bipedal and quadrupedal.

恐龍的運動方式有兩種，兩足運動和四足運動。

Quadrapeds like Pachyrhinosaurus walk on all fours.

像腫鼻角龍這樣的四足恐龍用全部四肢行走。

This stance gives them an advantage of being more stable especially when they have to turn very quickly.

這種姿勢給它們的優(yōu)勢是更加穩(wěn)定，特別是在它們要急轉彎時。

But Albertosaurus being a biped means that it only walks on two legs.

不過阿爾伯特龍作為一只兩足恐龍意味著它只用兩足行走。

This gives them greater speed but less stability in turning quickly.

這給它們更快的速度，不過急轉彎時穩(wěn)定性較差。

It could turn about as quickly as a modern elephant.

它轉彎的速度能跟現(xiàn)代大象一樣快。

I can see these animals would be circling two very different ways.

我能想象這兩種動物非常不同的移動方式。

The Pachyrhinosaurus more or less pivoting on one spot, the Albertosaurus trying to circle and find an advantage where it could come in fast from behind or from the side and use that to its advantage.

腫鼻角龍基本以一點為軸，阿爾伯特龍則繞著尋找機會來從后面或是側面迅速接近攻擊其薄弱環(huán)節(jié)。