評論
打印
The name Deinonychus means "terrible claw."
"恐爪龍"意為"恐怖的利爪。"
It's a reference to the hinged bone on its foot.
指的就是它腳爪上的鉸接骨。
The cutting edge is sheathed in keratin, the same substance that forms a cat's claw.
鋒利端表面覆蓋角質層，貓科動物的爪子也是由同種物質構成。
But on a Deinonychus, this claw is 10 centimeters long.
只不過恐爪龍的爪子有10厘米長。
This lethal weapon is sharpened to a point and can flex almost 180 degrees.
這一致命武器極其鋒利，且幾乎可以一百八十度彎曲。
To keep the knife razor-sharp, Deinonychus holds it up off the ground until the moment it's needed.
為了保持刀刃鋒利，不到必要時恐爪龍甚至不會讓它著地。
Then, in one lightning-fast swipe, this sickle can rip deep into flesh
然后閃電般地一劃，這柄鐮刀便深深撕破血肉，
delivering a kicking blow with 200 kilos of cutting force.
其切割力可達200公斤。
The key to the Deinonychus' killing blow is the hind leg.
恐爪龍的致命一擊，關鍵在于后腿。
The hind leg is the strongest organ in the body by far and ends in a huge claw like a box-cutting knife.
它的后腿是身體最強壯的器官，其末端的巨爪如切割機一般。
So that cutting, curved knife into your belly,
所以那把鋒利彎曲的利刃刺入目標腹部
into the target would cause a fatal wound with one...one flection.
隨著一次彎曲，帶來了一記致命的傷害。
Deinonychus instinctively knows to go for this giant's weakest point...its neck.
恐爪龍本能地意識到要對準這只龐然大物的弱點，它的脖頸。
You've got the windpipe there.
那里面有氣管。
You've got the jugular vein, which if opened up will mean that that Sauroposeidon is dead meat.
有頸靜脈，如果它們破裂開就意味著那只波塞東龍必死無疑。
But death does not come quickly or pleasantly.
但死亡的到來既不迅速也不愉快。
For a pack of Deinonychus, a kill this big means a feast.
對一群恐爪龍來說這么大的一次殺戮意味著一頓飽餐。
And their skulls are specially designed for competitive eating.
而它們頭骨的結構天生就是用來爭搶食物的。
Its jaws are narrow and lightly built.
它的雙顎又窄又輕。
And its gums are equipped with 70 sharp, serrated teeth.
牙齦裝備了七十顆鋒利的鋸齒狀牙齒。
They're like walking piranhas, perfect at eviscerating a victim.
它們如同行走著的食人魚，擅長為受害者開膛破肚。
If you look at the teeth carefully, they're ridiculously small.
如果仔細觀察它的牙齒，你會發現它們特別小。
They are very, very delicate. They're not killing weapons.
且非常，非常精細。算不上殺人武器。
A single adolescent Sauroposeidon, an animal more than 10 times the size of its killer,
一只少年波塞東龍體型比恐爪龍大十倍，
can feed a pack of hungry Deinonychus for weeks.
可供這只饑腸轆轆的兇手食用數周。
Making the kill worth the effort...and the risk.
因而值得恐爪龍為此拼斗為此冒險。
