Parshley）《生殖的生物学》（The Biology of Reproduction）一书。1933年潘光旦在《华年》周刊上发表了一篇署名“和”的书评，评的就是这本书，书名题为《生殖的科学》。
基于40个网页-相关网页
“这方面的例证不胜枚举，即便在生殖生物学里，自然方法也未必是最优和最有效的。”这就是报告的结论。
"There are many examples even in reproductive biology that the natural way is not necessarily the optimal or the most efficient one," they conclude.
然而，后一个问题，生物学已经有了几种解释，它们都以长寿命与生殖能力的平衡为中心。
For the latter, though, biology has several explanations, all of which revolve around a trade-off between longevity and the ability to reproduce.
显然，这种逆转录病毒基因填补了哺乳动物生物学的一个小生境，但是从另一方面来说，在第一次感染此类病毒以前，哺乳动物已经能够完美的生殖了。
Clearly, this retroviral gene fills an important niche in mammalian biology, but, on the other hand, mammals were able to reproduce perfectly well before they were first infected.
应用推荐