potency
noun [ U ] uk/ˈpəʊ.tən.si/ us/ˈpoʊ.t̬ənt.si/
力量；影响力；效力
strength, influence, or effectiveness
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。
（男子的）性能力
a man's ability to have sex
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。
Compare: impotence (SEXUAL PROBLEM)