他飞快地、鬼鬼祟祟地迈步往前，正当他要跨进门槛，就听见背后有说话声。
He started swiftly and stealthily, and just as he was crossing the threshold he heard voices behind him.
他深知应该怎样治理国家，怎样自信地迈步。
He knew well how to rule, he knew how to stride with confidence.
足部的拱形类似杠杆的作用，在迈步时起到蹬地作用，并且在脚着地时起到吸收冲击力的作用，这暗示露西的脚与我们现代人的很相似。
An arch in the foot would provide leverage to push off the ground at the start of a stride and then help absorb shock when the foot meets ground again, suggesting Lucy's feet were much like ours.
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