那些巨型哺乳动物的饮食是最需要多样性的。
The great beasts were the ones that needed the most diversity in their diet.
相关博客：恐龙灭绝为巨型哺乳动物繁衍铺平道路。
他们发现了很极端的现实：巨型哺乳动物，长久以来被认为是罕见的，其实对整个星球来说再常见不过了。
What they discovered was extraordinary: Giant mammals, long believed to be somewhat rare, were common across the entire planet.
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