听力文本

Finally, Currie's discoveries are beginning to convince others.
最后，Currie的发现终于开始说服别人
On the basis of these new discoveries, we're beginning to have to shape and change our ideas on how large predators behaved.
根据这些发现，我们开始形成和转变关于这些大型掠食动物行为的观点
If they're operating as a group, if they're operating as a pack,
如果它们是以团队，或者说是群体形式行动
a group of Giganotosaurus, for example, might have been able to mob even a big Argentinosaurus - something no one suspected before.
一群南方巨兽龙很可能去袭击更大的阿根廷龙--这在以前简直就是天方夜谭
But for Phil Currie, this idea was more than a suspicion.
对于Philip Currie来说，这种观点不容置疑
It made perfect sense to him that the giant South American meat-eaters preyed upon the long-necks.
他觉得大型食肉恐龙正是把蜥脚类恐龙作为猎物
He was convinced by their teeth.
他从它们的牙齿上找到了证据

The teeth of the new animal are better adapted for going after really big dinosaurs, like the long-necked plant-eaters that lived in that region.
新恐龙的牙齿非常适合对付大型恐龙，比如住在这个地区的植食蜥脚类恐龙
Because if you look at the teeth, the teeth are very blade-like.
你可以看看它们的牙齿，像是一把把匕首
They have serrations down the front and the back, and the teeth themselves are very narrow and knife-like.
前后都有锋刃，而牙齿本身很扁，像是一把刀
This is a slicing tooth, this is to designed to cut through meat.
这是一颗锋利的牙齿，它们被用来咬穿皮肉
So this new form could bite and slice out big chunks of flesh.
所以这种新恐龙能咬住并扯下一大块肉
Long-necks Argentinosaurus had massive bones, impossible to crunch through.
像阿根廷龙这样的蜥脚类恐龙的骨骼十分巨大，根本无法被咬穿
So the giant South American carnivores didn't even try.
因此南美洲的食肉恐龙不可能如此尝试
Instead, Currie believes they used their thin steak-knife teeth to strip flesh from around the enormous bones.
Currie认为它们是用刀刃般的牙齿撕扯巨大骨头周围的皮肉
They were probably moving in to take quick bites, slicing off only the flesh and not biting very deep at all.
它们可能是冲过去迅速咬上一口，切下一块肉，咬得并不是很深
And then when they had an opportunity they would come in again and take another bite, until the prey was weak enough that they can kill it.
然后找准机会再次进攻，再咬上一口，直到猎物不支倒下后再杀死它
So when a group of these predators attacked together in a pack, even a huge Argentinosaurus was doomed.
因此当这些掠食者发动集团攻击时，即使巨大无比的阿根廷龙也只能束手就擒
It looks like the clash of titans could really have happened, after all.
由此看来，这场巨型恐龙之间的肉搏终究还是上演了

词汇解析

1.on the basis of 根据；基于…
We will be dealing with each one of them on the basis of what information they have.
我们将根据他们所掌握的情报信息来一个个地进行处置。

2.prey upon 掠夺，折磨；捕食
Large bugs in the Lethocerinae family have been known to prey upon small vertebrates including fish and frogs.
我们知道Lethocerinae科的大型昆虫会捕食包括鱼和蛙类在内的小型脊椎动物。

3.be adapted for 适宜
Preparation of the vaccine strain (called vaccine virus): The virus must first be adapted for use in manufacturing vaccine.
制备疫苗株（称为疫苗病毒）：首先必须使病毒适合用于生产疫苗。

4.slice out 切出
You can grab a single element, add different elements together, slice out several elements, and even add together different slices.
您可以获得单个元素，将不同的元素添加在一起，切出几个元素，甚至将不同的片段添加在一起。

视频及简介

BBC跟随着科学家到达阿根廷。在那里，他们挖掘到了一种崭新的恐龙。它们比暴龙还要大，是至今为止所发现的最大的食肉动物。这种捕猎者的头骨比一个人要大，上面还布满了锯齿状的，小刀样的牙齿和长的，强壮的颚肌肉。它们能够以外科手术般的精确度来把它们的猎物切成碎片。