Scientists have long believed that human beings evolved from primates like gorillas.
长久以来，科学家都认为人类是由猩猩之类的灵长动物进化而成。
Animals with robust jaws, like gorillas and orang-utans, have long been known to be adapted to eating foods that require a lot of chewing.
而有强壮颌骨的动物，如大猩猩和猩猩，则适应吃那些需要很多咀嚼的食物。
Researchers who examined the wrist bones of several primate species believe our early human ancestors never used their knuckles to walk like gorillas.
研究人员在仔细检查了若干种灵长类动物的前肢腕骨之后相信，早期人类祖先从来没有像大猩猩(gorillas)那样，用前肢握拳支撑着身体行进。
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