propagating fecundity

• 繁殖力

propagating fecundity的用法和样例：

例句

1. He used aphid fecundity data to elucidate the theoretical effects of antibiosis on insect population dynamics.
   他利用蚜虫繁殖力资料说明了抗生作用对虫口动态的理论效应。
2. Why do individuals deteriorate as they grow old, with resultant reduced fecundity and vigor?
   为什么生物个体变老后身体恶化，繁殖力和精力降低？