对大多数物种而言，这样一种可利用资源的增加往往会导致相反方向的繁衍结果。
In most species, such an increase in available resources leads in the opposite reproductive direction.
对人类而言，就像对大多数动物物种那样，雌性的身体状态对繁殖的成功非常重要。
In humans, as in most animal species, the state of the female body is very important for the success of reproduction.
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