評論
打印
Tyrannosaurus rex, though, lives in an entirely different world.
而霸王龍，卻生活在截然不同的世界中。
A male devours a Triceratops carcass. Those powerful jaws smash into the meat of the animal.
一只雄龍正在吞食三角龍的尸體。強(qiáng)有力的爪子刺入獵物的肌肉中。
Those gigantic teeth pierce down through flesh. These well-rooted teeth are there to break into the bones.
這些巨齒刺穿肉塊。這些堅(jiān)固的牙齒足可以咬碎骨頭。
Scavenging keeps T. Rex alive. Maintaining strength is essential. His chicks are depending on him.
吃腐肉能讓霸王龍活下去。保持力量至關(guān)重要。它的孩子們還指著它呢。
Left alone, they're as vulnerable as a clutch of baby Sauroposeidon.
它們無人看管，就像年幼的波塞東龍一樣脆弱。
And a Quetzalcoatlus has a voracious appetite.
而披羽蛇翼龍的食量很大。
Soaring at 3000 meters, a sense of smell is useless.
在三千米高空，嗅覺是沒用的。
This flying reptile relies on its incredible eyesight to scan for vulnerable infants on the ground.
這類飛行爬行動(dòng)物靠的是驚人的視覺從空中掃描地面上的獵物。
It could make the difference between a meal and no meal.
它能夠區(qū)別出目標(biāo)是否是獵物。
It zeroes in on a target. A meter-long baby T. Rex appears on the radar.
它對焦在一個(gè)目標(biāo)上。一米長的霸王龍幼崽出現(xiàn)在雷達(dá)上。
It's gonna need to have fairly good distance vision be able to see just generally where it's going and targets on the ground.
它需要一個(gè)良好的遠(yuǎn)距離視覺，才能看清地面的大致情況并鎖定地面目標(biāo)。
They would have been just about the right size to be a snack for Quetzalcoatlus.
它們的大小正好適合做披羽蛇翼龍的小吃。
Luckily, just as this massive flying reptile approaches the nest, the male senses trouble.
幸運(yùn)的是，正當(dāng)這個(gè)巨型爬行類動(dòng)物逼近巢穴時(shí)，雄龍察覺到了危險(xiǎn)。
His ultra-sensitive olfactory lobes pick up the distinctive scent of Quetzalcoatlus.
他極度敏銳的嗅覺腦葉察覺到披羽蛇翼龍的特殊氣味。
This triggers a rush of chemicals to the brain, and an immediate decision to return to the nest.
這將導(dǎo)致一股化學(xué)脈沖通往大腦傳達(dá)"迅速回巢"的信息。
But Quetzalcoatlus are fast. And it only takes a split second to launch their 180-kilo body into the sky.
但是披羽蛇翼龍動(dòng)作敏捷。眨眼間，一百八十公斤的它就能一飛沖天。
The other chicks might just make it for another generation.
其它的幼龍也許可以生存到下一代。
