Jungers pulls his office chair over to an assembled human skeleton hanging like a suit from a hanger.

容格斯把他的办公椅拉近了一副像西装一样挂在衣架上的组装人骨骼。

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Still, heel and toe depths at Laetoli provide a glimpse of efficient walking “long before the emergence of our own genus, Homo, ” Jungers says.

然而，拉多里脚印脚跟和脚趾的深度提供了有效步行的一瞬间，它“远在我们自己的Homo人类属出现之前，”蒋格斯说道。

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The real question, Jungers says, is why we abandoned that strategy or chose an alternative strategy — the alternative being full-time living on terra firma.

容格斯说，真正的问题是为什么我们放弃两栖战略，而选择目前的全时陆地生活。

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