形容詞 bipolar:

1. of or relating to manic depressive illness
2. of, pertaining to, or occurring in both polar regions
3. having two poles

bi.po.lar

adj.（形容詞）
Relating to or having two poles.
兩極的：關(guān)于兩極的或有兩極的
Relating to or involving both of the earth`s polar regions.
南北兩極的：關(guān)于或涉及地球兩極地區(qū)的
Having two opposite or contradictory ideas or natures:
兩極世界的：有兩種相反或矛盾的見解或性質(zhì)的：
例句：
the bipolar world of the postwar period.
戰(zhàn)后的兩極世界

Biology Having two poles or opposite extremities:
【生物學(xué)】 有兩極或相反極端的：
例句：
a bipolar neuron.
兩極神經(jīng)原

Psychology Relating to a major affective disorder that is characterized by episodes of mania and depression.
【心理學(xué)】 雙向(感情性)障礙的：與主要由感情引起的精神失常有關(guān)的，其特點(diǎn)為躁狂與抑郁并發(fā)

【引伸】
bi.polar.ity