Pormpuraawa人不仅知道了他们面对的方向，而且还自然而然地利用这一空间方位构建了他们的时间表征。
The Pormpuraawans not only knew that already, but they also spontaneously used this spatial orientation to construct their representations of time.
提出了表征路面表面空间几何特征的整体特征参数和局部特征参数。
The whole feature parameters and local feature of spacial geometric features of road surface are put forward.
这种方法是通过对特征值的研究，追求表征空间的维数压缩。
Such technique pursues, through the study of the eigenvalues, the reduction of the dimensionality in the representation space.
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