I allude to the neuters or sterile females in insect communities: for these neuters often differ widely in instinct and in structure from both the males and fertile females, and yet, from being sterile, they cannot propagate their kind.

我指的是昆虫群落中的中性或不育雌性：因为这些中性通常在本能和结构上与雄性和可育雌性有很大差异，但由于不育， 它们无法繁殖同类。