Perhaps 20 or more hominids (not all of them our ancestors) fill the gap between Lucy the australopithecine and modern humans.
在阿法
（
西）与现代人之间，人科动物的化石也许超过20种（他们不全是我们的祖先）。
Perhaps 20 or more hominids (not all of them our ancestors) fill the gap between Lucy the australopithecine and modern humans.
在阿法（西）与现代人之间，人科动物的化石也许超过20种（他们不全是我们的祖先）。
"We think about the evolution of bipedalism as one of first events that led hominids down the path to being human.
“
腿直
的进化是原始人向人类进化的最初阶段中的一步。”
We think about the evolution of bipedalism as one of first events that led hominids down the path to being human.
腿直的进化是原始人向人类进化的最初阶段中的一步。
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