We think about the evolution of bipedalism as one of first events that led hominids down the path to being human.
双腿直立行走的进化是原始人向人类进化的最初阶段中的一步.
《简明英汉词典》
It is, in fact, the oldest, most primitive group of hominids thus far discovered.
事实上, 这是迄今发现的最古老的 、 最原始的人类集团.
辞典例句