过去的将一去不复返 » The past will be gone forever 直立行走 » Walking upright 宁波港是上海国际航运枢纽港的重要组成部分，已与世界上216个国家和地区的600多个港口开通了航线。
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upright walking 比如直立行走
Walking upright permitted the father to use his hands to gather food and carry it to his mate from a distance.
直立行走使父亲可以用手收集食物并从远处把食物带给他的配偶。
If the small-brained australopithecines were not toolmakers, what evolutionary advantage did they gain by walking upright?
如果脑子比较小的古猿不是工具制造者，那他们直立行走的进化优势是什么？
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