听力文本

We have meat-eating dinosaur footprints, but all of them seem to be solitary.
我们也发现了食肉恐龙的脚印，但都是单独的脚印
Even when we have a track-way of several footprints in a row,
就算找到一连串脚印的痕迹
we never seem to have any track-way with it that show a group of animals moving together.
我们也没有发现能证明它们一起走路的证据
So whereas that is actually rather common for the plant-eating dinosaur footprints,
总之植食恐龙脚印的共同特征
it's essentially absent for the meat-eating dinosaurs footprints.
在食肉恐龙的脚印中根本不存在

There is another key piece of evidence which supports the view that plant-eating dinosaurs were group animals.
另外还有一个关键的证据能支持植食恐龙是群居动物的观点
This desolate landscape contains a bone bed, a collection of dinosaur bones buried together.
这片荒凉的土地中有一个化石坑，埋藏着一大群恐龙的骨骼化石
The fossilized remains of hundreds of plant-eating dinosaurs,
足球场般大小的土坑内躺着数百具恐龙骨骼，
all of the same species, could die together, carpet an area the size of a football pitch.
它们都是同一种植食恐龙，一起死于非命
This bone bed is full of horned dinosaurs of different ages - little babies, large full-grown ones.
这个化石坑中都是大大小小的角龙，小恐龙，还有成年大恐龙
And it's clear that they were probably crossing a swollen river and got drowned trying to cross.
它们很可能正在横渡一条泛滥的河流，结果全都淹死在里面了

词汇解析

1.seem to be 似乎
Things seem to be going from bad to worse nowadays.
情况似乎越来越糟了。

2.in a row 一连串
Then, practice the change for 21 days in a row in order to make it a true habit.
然后，坚持这种改变保持连续的21天，以便让它成为一个真正的习惯。

3.absent for 缺席
Police made the discovery after a school employee noticed the children absent for several days.
学校的一名职工发现孩子们已有好几天没到学校，于是向警局报了案。

4.a collection of 一大群
So, we have a collection of objects.
所以，我们有一个对象集合。

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。