potency

名词 potency:

1. capacity to produce strong physiological or chemical effects
   同义词：effectiveness, strength
2. the inherent capacity for coming into being
   同义词：potential, potentiality
3. the state of being potent; a male's capacity to have sexual intercourse
   同义词：potence
4. the power or right to give orders or make decisions
   同义词：authority, authorization, authorisation, dominance, say-so

1. One wonders also why Nature, with some snakes concocted poison of such extreme potency.
   人们也不知道大自然为何在一些蛇身上调制出这样高效的毒液来。