The bone also shows that A. afarensis had abandoned the flexible midfoot that apes use to grasp tree branches, in favor of an arch that makes upright walking more efficient.

这个骨头也说明南方古猿已经抛弃了猿所具有的用于攀爬树枝的柔韧的足中段结构，由于足弓结构的出现，直立行走变得更有效率。

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Methods:113 cases of midface fractures were reviewed. The nasal bone fracture, zygomatic arch fracture, optic nerve contusion, zygomatic maxilla fracture were treated.

方法：回顾分析113例面中部骨折的临床资料，治疗了鼻骨、颧弓、视神经损伤及颧上颌骨骨折。

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Kate Hudson’s brows look greaton her face because the arch is correctly aligned with her brow bone and it’s not too thick or too thin and is shaped in a straight line。

凯特·赫德森的眉型非常适合她的脸，因为眉毛的弧度与她的眉骨非常协调，眉毛不太粗也不太细，画成一条直线。

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