用离散的位置基矢近似替代连续位置基矢，建立分立位置表象。

By using the discrete position base - vectors approximating for the continuous position base - vector, the discrete position presentation is constructed.

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用离散的位置基矢作为连续位置基矢的近似，构建分立位置表象。

By using the discrete position base-vectors approximating for the continuous position base-vector, the discrete position presentation is constructed.

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到目前位置，他们发现，就和大鼠一样，和没有怀孕的对照组相比，怀孕的女性在某些学习和记忆任务中的表象更糟。

So far, they've found that just as in rats, pregnant women perform worse on some learning and memory tasks than nonpregnant controls.

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