1. A magnet has polarity.
    磁铁具有极性。

1. 配极：这是虚卵形面、实卵形面或直纹二次曲面.一个 非退化二次曲面确定一个对射变换(correlation)(或 配极(polarity)),即从射影空间的点集到平面集上的 一一映射.一个直纹非退化二次曲面有两个不同的生 成元族,

2. 极化：极化(Polarity)在国际关系上指的是国际系统里的权力分配. 这种观念在冷战期间浮现,当时国际系统是由两个两极的超级大国之间的冲突所主导的. 在1945年以前的国际系统则被称为多极,由许多大国之间主导.

1. 完全相反；截然对立
    If there is apolarity between two people or things, they are completely different from each other in some way.

    e.g. ...the ideological polarity between nations.
           国家间意识形态的截然对立
    e.g. ...the polarities of good and evil...
           善与恶的针锋相对

1. a relation between two opposite attributes or tendencies

    e.g. he viewed it as a balanced polarity between good and evil

    Synonym: mutual opposition

2. having an indicated pole (as the distinction between positive and negative electric charges)

    e.g. he got the polarity of the battery reversed
           charges of opposite sign

    Synonym: sign