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Triceratops may be a plant eater, but with a defenseless baby T. Rex around, it'll make an exception.
三角龍也許是草食性動物，但對毫無防備的霸王龍寶寶來說那就另當別論了。
Quetzalcoatlus is the largest flying carnivore in Earth's history.
披羽蛇翼龍是地球歷史上最大的食肉飛行動物。
It eats 4-5 kilos of flesh every day, nearly the weight of two hatchlings combined.
每天它要吃掉四到五公斤肉，這大概相當于兩只幼龍的重量。
To survive, these chicks will have to keep a very low profile.
為了生存，這些雛龍要時刻保持低調。
A Tyrannosaurus rex can pinpoint the exact location of an odor.
霸王龍能夠精確定位氣味的來源。
Soon he's headed straight for the dead Triceratops.
不久它就找到了三角龍的尸體。
The sense of smell was powerful in the T. Rex.
霸王龍的嗅覺非常強大。
The nerve that goes to the sense of smell is the biggest nerve the dinosaur had.
嗅覺神經是恐龍神經中最粗大的。
They could probably tell not just if there was dinosaur that had walked past.
它們不僅能嗅出這里是否有一只恐龍經過。
They could be able to tell that that dinosaur walked past 2 and half hours ago.
它們還能知道這只恐龍在兩個半小時前經過此處。
T. Rex's nose, like a laser-guidance system, and leads him directly to his target.
霸王龍的鼻子，相當于激光制導系統，能夠引導它直達目標所在地。
But what these advanced senses do not tell him, is how his Triceratops died in the first place.
但是這些發達的感官不能告訴它這只三角龍是怎么死的。
The answer to that question is found in the mouth of another T. Rex.
問題的答案便是另一只霸王龍的利齒。
This predator's massive jaws, with their bone-crushing teeth, able to bite down with enough force to bend steel, hold the hidden danger.
這個掠食者的強力顎部加上有碎骨之力的獠牙，驚人的咬合力能夠使鋼筋變形，但里面還藏有玄機。
It's quite likely that the teeth of carnivorous dinosaurs have rotting meat, little bits of it, caught in their teeth and therefore a lot of bacteria and therefore an infectious bite.
很明顯，這些肉食恐龍的牙齒上沾有腐肉，只要有一點掛在牙齒上，然后就會滋生細菌使傷口感染。
The bacteria would have given T. Rex permanent bad breath.
口腔中的細菌會讓霸王龍終年口臭。
There would be many reasons you would not want to be around the mouth of a T. Rex, and smell would have been one of them.
有很多種原因會讓你遠離霸王龍的嘴部，它的口臭就是其中之一。
That bacteria means that any bite that draws blood, can cause a life-threatening infection.
口腔中的細菌意味著每一次濺血的撕咬都可能造成致命的感染。
Even if the animal managed to survive the wounds generated from the bite, the prey dinosaur would get weaker and sicker, and the predator could then hunt it down and kill it.
即使獵物在霸王龍的致命撕咬后逃生，獵物也會變得越來越虛弱，這樣霸王龍便能追捕并最終殺死它。
Bitten by a T. Rex, and you're downfall, be it now or later.
霸王龍的撕咬會讓你虛弱至死，這是遲早的事。
And once you're down, Tyrannosaurus rex will find you and eat you.
一旦你倒下，霸王龍便會找到并吃掉你。
Unfortunately, for this T. Rex, the stench of rotting meat draws a crowd.
對于這只霸王龍，很不幸的是腐尸的氣味引來了其它恐龍。
And while a hungry adult male fights for his share of the spoils, his unguarded hatchlings wait for his return, while a Quetzalcoatlus circles above.
而正當這只成年雄龍為了自己的戰利品而爭奪時，無人看護的幼崽正等著他回來，而這時一只披羽蛇翼龍正在上空盤旋。
