听力文本

It's an immense plant-eater. It's perhaps 80 to 100 metric tonnes.
它是庞大无比的植食恐龙，可能有80～100吨重
It's the size of a herd of elephants.
换句话说，相当于一群大象
It may be that there are dinosaurs even bigger than Argentinosaurus.
可能还有比阿根廷龙更大的恐龙，只是还没有被发现
But at present, that's as big as we know any land-living creature has ever been.
但是目前而言，它是我们迄今所见生物史上最大的陆地动物
This replica of Argentinosaurus is being built for the town square in Plaza Huincul.
这只阿根廷龙模型将竖立在普拉萨乌因库尔镇中心广场
When it's finished, it will stand as tall as a five-storey building.
完成后它将有5层楼那么高
It wasn't just this dinosaur's size that was out of the ordinary.
这种恐龙的特别之处不仅只是体型

When scientists analyzed the layers of rock in which the skeleton was found, they discovered something.
当科学家们分析骨骼所在的岩层时，他们又有了新的发现
Argentinosaurus, along with many smaller South American long-necks, had been living at the wrong time.
阿根廷龙，连同许多较小的南美洲蜥脚类恐龙都生活在错误的年代
This fact was to prove crucial.
这一事实极为重要
Layers of fossil-bearing rock have shown that dinosaurs roamed the planet for 180 million years.
化石岩层显示这种恐龙生活在地球上的年代是1亿8千万年前
Over the course of this time, hundreds of different species evolved and died out.
在这个时代，有数百种恐龙进化和消亡
By the middle of their time on Earth, the Jurassic Period,
这个时代的中期是著名的侏罗纪
the land was dominated by massive plant-eating dinosaurs, the long-necks.
陆地上的统治者成了巨型植食恐龙--蜥脚类恐龙

词汇解析

1.a herd of 一群
A herd of about 100 African buffalo meanders quietly along a riverbank.
一群非洲水牛，大约100只，安详地顺着河岸漫步。

2.at present 目前
I don't need the dictionary at present.
我现在不需要这本字典。

3.out of the ordinary 不平常的
Instead of tube time, try something new and out of the ordinary with the people in your life.
除了把时间用来看电视，试着去和朋友们做一些新的不同平常的事情。

4.Over the course of 在...期间
I’ve done that over the course of four years in high school.
我已经在高中的时候重复这一过程长达四年的时间了。

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。