As he moves in for the kill, Nanotyrannus feels a horrible pain in his left leg.
在它向前想要发动致命一击时，矮暴龙感到左腿上钻心地疼。
He looks down and there is the second juvenile T-Rex.
它向下看到另一头幼龙。
He's recovered from his sling across the forest floor and he's attacking.
它已经从被摔到地上恢复了过来，正在发动进攻。
He's bitten the Nanotyrannus on the leg and if that wound becomes infected, it could end his life.
幼龙一口咬住矮暴龙的腿，如果伤口感染的话，这会要了它的命。
This time Nanotyrannus will make sure that the T-Rex dies.
这次矮暴龙会确定让霸王龙丧命。
Flexing all the power of his jaws, he clamps down with nearly half a ton of pressure, and crushes its spinal cord.
它用尽双颚的全部力气爆发出将近达半吨的力量，咬断了霸王龙的脊柱。
He throws it to the ground, and using his foot claw, he stomps the baby.
它把尸体扔到地上，抬起脚爪踩住幼霸王龙。
Now it knows that the juvenile Tyrannosaurus Rex is dead.
现在它知道幼霸王龙已经死去。

But there's no time to eat. With one T-Rex down, Nanotyrannus moves in for the final kill.
不过没时间进食。干掉了一头霸王龙，矮暴龙继续要再下杀手。
As he leans down to take a bite, he feels the ground begin to vibrate.
随着它倾身去咬，它感到了地面的振动。
This tell-tale sign says there's something big and it's nearby.
这一迹象告诉它来者很大，而且就在附近。
It's the adult female T-Rex coming back from her hunt.
雌性成年霸王龙狩猎归来。
She hears the very distinctive sound of her young pleading for help.
它听到了孩子非常特别的求助声。
It kicks in an emotion that's only found in female Tyrannosauruses.
这激发了只有雌霸王龙才有的一种情绪。
Mess with my baby, you're messing with hell.
敢动我孩子，我要你好看。
Driven by her maternal instincts, the female is the first to arrive on the scene.
受到母性本能的驱使雌霸王龙率先回到现场。
The female Tyrannosaurus knows instinctively this is a killer of juvenile Tyrannosaurus Rexes.
雌性霸王龙本能地知道这是幼霸王龙杀手。
She's got to leap into action.
它必须马上加入战斗。
She doesn't have to worry about sizing up this opponent.
它用不着打量对手的体型。
She's three times bigger. She just needs to kill him.
它是矮暴龙的三倍大。它要做的就是杀了对手。
The female T-Rex intends to distract Nanotyrannus from the lone surviving juvenile.
雌霸王龙试图把矮暴龙从活着的幼龙那里引开。
Nano sees her giant jaws and sidesteps with his long legs.
矮暴龙看到它的巨颚，迈开长腿闪到一边。
But the female has accomplished the most important thing, get herself between her remaining juvenile and the killer of baby T-Rexes.
但是雌霸王龙已经达到了最重要的目的，挡在它幸存的幼龙和幼霸王龙杀手中间。
Now the Nanotyrannus has two options, try to finish off the remaining juvenile Tyrannosaurus Rex or turn around and run.
现在矮暴龙有两种选择试图干掉还活着的幼雷克斯暴龙或者转身逃跑。