and

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and also one of the oldest,
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and also one of the oldest, 也是最古老的岛屿之一

With time and isolation, its animals have adapted
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With time and isolation, its animals have adapted 随着时间流逝与地理隔断的出现 岛上的动物们不断适应

And these provide opportunities for life to experiment and evolve.
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And these provide opportunities for life to experiment and evolve. 这为不同生命的进化与试验 提供了机会

The limited food and space on small islands
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The limited food and space on small islands 岛屿上有限的食物和空间

And their serrated teeth are as sharp as steak knives.
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And their serrated teeth are as sharp as steak knives. 锯齿形状的牙齿像牛排刀一样锋利

and that creates continual conflict.
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and that creates continual conflict. 导致冲突不断

And there are some 2,000 of them here.
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And there are some 2,000 of them here. 而这座岛上有约两千只巨蜥

Ten feet long and weighing an impressive 150 lbs,
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Ten feet long and weighing an impressive 150 lbs, 体长三米 重达六十八公斤

and she won't mate again until it leaves her in about six months' time.
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and she won't mate again until it leaves her in about six months' time. 在幼崽六个月后长大离开之前 她不会再次交配

And this, for a sloth, is a quick reaction.
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And this, for a sloth, is a quick reaction. 对树懒来说 这反应堪称迅猛