- Today, 10,000 species strong,
如今 鸟类有超过一万个物种 - they've found a way to thrive in almost every corner of the planet.
几乎在地球上的每一个角落繁荣发展 - But they are not the only ones to have conquered the world.
但征服世界的不只有它们 - Not so long ago,
在不久之前 - the Americas were still at the mercy of the terror birds.
美洲仍在骇鸟的蹂躏之下 - But these apex predators would soon become the prey.
但这些顶级捕食者很快就会成为猎物 - Other survivors of the asteroid had also been evolving.
小行星撞击的其它幸存者也在进化
Not so long ago, 在不久之前
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