腱龙长长的尾巴很明显是非同寻常的武器。

So it's got a great way to defend itself.

所以是保障自身安全的好办法。

That means that this animal came in contact with predators a lot.

也就是说这种动物与掠食者的碰面并不罕见。

It had fight skills because it lived with Deinonychus, and that meant it was on the menu a lot.

因为它跟恐爪龙生活在同一领域，一定要有战斗技能，这也意味着它经常是捕猎对象。

So it has actually very good fight skills for an herbivore.

因此腱龙在植食动物里战斗技能不弱。

Deinonychus absolutely had good fight skills.

恐爪龙当然有绝佳的战斗力。

This is an animal that makes its living killing, and the more it kills, the better it survives and the more it kills the better its fight skills are.

这种动物是靠杀戮来生存的，杀戮越多，生存才能无忧，而且杀戮越多越能练就更强的猎杀技能。

The site of a prehistoric attack had been revealed in Montana - An enormous Tenontosaurus ambushed by a pack of deadly Raptors.

这个史前的战场就位于蒙大拿——一群致命的迅猛龙伏击一头壮硕的腱龙。

Based on scientific method, forensic and CAT scan evidence, and analysis of modern animal behavior, a hypothetical scenario for this gang attack has been devised.

依据现场和CT扫描的证据加上对现代动物行为模式的分析，专家们想象出了这场群体攻击。

A herd of Tenontosaurus is on the move.

一群腱龙正在迁移。

Tons of rolling thunder consuming everything in its path.

雷鸣般的脚步声掩盖了路上的一切声响。

Only this day, they've got some unwelcome company.

可今天，它们成了一群不速之客的目标。

These dinosaurs have no idea they're being followed by some of the nastiest, most dangerous little dinosaurs ever walked on Earth.

这些恐龙并不知道它们已经被盯上了，跟踪者是一些地球上有史以来最危险凶残的小型恐龙。

The Raptors, the deadliest of all dinosaurs, are about to strike.

恐龙中最致命的迅猛龙即将发动攻击。

Quick but intelligent, they single out the weakest member of the herd.

它们迅速巧妙地锁定了腱龙群中最弱的成员。

They would stand off at a distance and look at the herd.

它们隐藏在距腱龙群远一些的地方观察。

They want to choose the most effective target.

迅猛龙会选择最易得手的目标。

They're not just gonna run in and try to attack the first dinosaur they find.

它们不会冲上去就攻击最先出现的恐龙。

It could be that that dinosaur is bigger than they are, or, more importantly, it's completely healthy and can defend itself.

这或许是由于那头恐龙比它们大太多了，更重要的是这头恐龙正值壮年，有绝对的自卫能力。

Once they pick out their prey, they're going to attack and the Tenontosaurus is going to be in dire trouble.

一旦它们选定目标，它们就会展开攻击，而腱龙则马上就要陷入危机了。

Their eyes lock onto their target.

它们的眼睛紧盯着目标。

They begin to stir, slowly, deliberately, silent except for the hissing of their breath.

它们开始慢慢地谨慎前行，现场静得只能听见它们的呼吸声。