polarity
/pəˈlrətɪ; pə`lærətɪ/ n
1 [U, C] (in a magnet) possession or location of negative and positive poles （磁体的）极性
the polarity of a magnet 磁体的极性
reversed polarity/polarities 反转极性.
2 [U] ~(between A and B) (fig 比喻) difference or separation(between people or things) in condition, views, etc （人或物之间条件、 看法等的）分歧, 对立
the growing polarity between the left and right wings of the party 党内左右翼间日益增大的分歧.