专家说，由于海浪一波接一波地冲击时与海岸之间产生复杂的相互作用，海啸的影响大小存在很大变数。
Because of the complicated interactions with the coast as wave after wave strikes, experts said the impact of a tsunami can be highly variable.
可是目前确实还没有作为个体的我所能够做的事情。这些事情能激励我尽力地去产生一个作用在人类的那个上层“躯体”上的积极、有力的冲击。
There's really nothing I can do as an individual that excites me as much as having a positive impact on the larger body of humanity.
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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