polarityKK [poˋlɛrəti] /poʊˈlɛɹəti/发音名词1极性物理If you reverse the polarity of the battery, the motor spins backward.如果把电池的极性反过来接,马达就会反转。2两极对立、截然相反、对立性The debate revealed a deep polarity between the two generations.这场辩论显露出两个世代之间深刻的对立。用这个字练口说→