strength, influence, or effectiveness力量;影响力;效力
This new drug's potency is not yet known.这种新药的效力目前还不清楚。
He owed his popular support to the potency of his propaganda machine.他获得广泛支持,他将这归功于他的宣传机器的力量。
a man's ability to have sex(男子的)性能力
Consuming large amounts of alcohol can significantly reduce a man's potency.大量饮酒会大大降低男子的性机能。