人类已不再其祖先发源在水下繁衍，然而与海洋的关系依然密切。
HUMAN beings no longer thrive under the water from which their ancestors emerged, but their relationship with the sea remains close.
即使人类已不再需要以捕杀野生动物或捕鱼为生，但对这些活动的热衷却依然存在。
Even though it is no longer necessary to kill wild game or catch fish in order to live, the devotion to these activities has remained.
周四出版的科学杂志上的一个研究声称：从一段在埃塞俄比亚发现的足弓部化石骨骼上研究显示，人类祖先在320万年以前已不再生活在树上而是开始在地上直立行走。
An arched fossilized foot bone found in Ethiopia shows that human ancestors walked upright 3.2 million years ago and were no longer tree dwellers, said a study Thursday in the journal Science.
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