水平地基的变形大致对称于线路中心线，斜坡地基的变形集中在下坡一侧边坡下；

The deformation of level foundation is generally symmetric of road central line and the deformation of slope foundation is mainly concentrated on the border side of the declivity.

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由于直至钻这些小孔时，工件都对称于大孔轴线，所以没必要控制围绕大孔轴线回转的位置。

There is no need to control the rotational position about the axis of the bore, because up to the time when the holes are drilled, it is symmetrical about that axis.

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例如，认为自己有吸引力的女性更倾向于寻找长得对称的男性。

For instance, women who find themselves attractive seek more symmetrical men.

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