The philosophic thinking of "Four directions" and "Eight directions" of primitive human was a very important milestone from primal chaos thought transited to abstract thought.

四方和八方的哲学观更是原始人类，由混沌思维过渡至抽象思维的重要里程碑。

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This paper gives an algorithm of the acquisition of boundary vector of regions through a way of bi value processing and the directory judgement of the neighbouring domains in eight directions.

文中就如何对规则格网数据所描述的区域通过二值化处理 ，运用八向邻域的有向判断策略 ，提出了一种获取描述区域矢量边界的算法。

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You see, with the square as the center, eight equiangular thoroughfares extend toward eight different directions.

你来看，以这座广场为中心，八条主路以相等的角度向八个方向延伸。

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