以下为句子列表：
英文: The first primates, you could say, looked quite a bit like arboreal tree shrews,Sargis added. They were mixed feeders, eating fruit and insects and living in the trees.
中文: 最早的灵长类动物,看上去有点象树栖地鼠,它们是杂食动物,食用水果和昆虫,在树上生活.
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英文: However, as the lizards grew ever more arboreal in habitat, the scientists projected that natural selection would begin to favor shorter limbs, which are better suited to navigating narrow branches and twigs.
中文: 但是，当这种蜥蜴逐渐养成树栖习性时，科学家们预计自然选择会开始倾向于短肢的品种，因为短肢更适合于攀爬狭窄的树枝。
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英文: Human vision like that of other primates has evolved in an arboreal environment.
中文: 人类的视觉，和其它灵长目动物的一样，是在丛林环境中进化出来的。
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英文: One camp held that A. afarensis had transitioned fully to terrestrial life, and that the tree-friendly features of the upper body were just evolutionary baggage handed down from an arboreal ancestor.
中文: 论战的一个阵营认为他们已经完全转变为陆地生活，其上肢对于树的适应特征只是来自树栖远祖的进化残留。
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英文: Orioles are arboreal birds, and when they descend to the ground, it is mainly to gather nest materials.
中文: 白头翁主要生活在空中，到地上来时，主要是为了收集建巢材料。
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