他们把研究站点划分为向个离散的区域，并且让不同的数量的动物上在此牧草。
They divided the study site into discrete areas and allowed different amounts of animal grazing on each.
这些动物彼此之间很不同，但是我们可以把他们分为几大类：以其他动物为食物的；以草和叶子为食物的。
These animals are very different from one another, but we can 【 divide 】 them into big groups: those that eat other animals and those that eat grass and leaves.
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