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Sauroposeidon towers over Deinonychus. In fact, its mammoth size is its primary defense. But this giant begins life very small.
波塞東龍比恐爪龍高出很多。事實上，他們高達的體型就是他們最主要的防御武器。但是這種大型恐龍剛出生的體型很小。
For Deinonychus, Sauroposeiden would be a great meal, at least the juveniles, because there would’ve been lots of them and because they would’ve been effectively defenseless.
對于恐爪龍來說，波塞東龍可能是一頓大餐，至少年幼的波塞東龍絕對是一頓大餐，因為年幼的波塞東龍數量很多，而且他們基本上沒有什么防御力。
When Sauroposeidon reaches full size at around 25 years old, nothing can compete. But this Goliath starts out about the size of a house cat. When these eggs hatch, the young grow fast, but not fast enough. They won’t even reach a ton in weight for at least three years, giving the raptor Dinosaurs plenty of time to attack.
當波塞東龍在出生的25后，生長到最大體型時，沒有任何恐龍的防御力能和它們媲美。但是這種“巨人”最開始的體型就和家貓差不多大。當它們的蛋孵化后，幼崽的生長速度很快，但是還不夠快到能逃避被捕食的命運。至少3年內，它們的體重都不會超過1噸，這給了迅猛龍撲殺它們的機會。
There’s good evidence that Deinonychus killed animals that weighed 10 times as much as it.
一些發現可以很充分證明，恐爪龍可以捕殺比他們體型大10倍的恐龍。
And 10 times Deinonychus’ weight in raw meat is a very big meal.
而10倍于恐爪龍體型的恐龍絕對可以稱得上是大餐了。
They could probably feast for a while on, say, a three-year-old Sauroposeidon, an animal the size of a hippo.
他們可能會盡情享受一只三歲大的波塞東龍作為食物，而三歲大的波塞東龍體型相當于一頭河馬。
Bringing down an animal 10 times your size takes more than just brains. It requires highly advanced senses.
放倒一只體型大于你10倍的動物，需要的不僅僅是大腦。還需要高度發達的感覺系統。
We can tell that it had a good sense of vision, good hearing, and a pretty good sense of smell.
我們可以判斷，恐爪龍的視覺，聽覺以及嗅覺都十分靈敏。
In fact, like few carnivores of its day, Deinonychus has a sense of smell so acute, it can track prey in the dead of night.
事實上，和當今的大多數肉食動物不同，恐爪龍的嗅覺極度靈敏，它可以在夜間捕捉到獵物的氣味。
Inside the snout are two nasal passages. Like an air filter, sheets of sensory tissue are folded to maximize surface area. This tissue contains millions of chemoreceptors, nerves that capture odor molecules. So Deinonychus can sniff out prey from miles away.
它們的鼻子里面有兩條鼻腔。就像是空氣過濾器，多層的感官組織折疊在一起以便最大面積接收信息。這個器官包含數百萬個化學感受器，以及可以捕獲氣味分子運動的神經。因此，恐爪龍可以聞到幾英里外的獵物的氣味。
The sense of smell in Deinonychus could alert…
恐爪龍的嗅覺系統可以警戒...
英文文本來自普特英語，譯文屬可可原創，僅供學習交流使用，未經許可不得轉載。
