1.That many breeds produced by man have to a large extent the character of natural species, is shown by the inextricable doubts whether many of them are varieties or aboriginally distinct species.
育出的许多品种在很大程度上具有自
物种的特征,这一点可以从无法摆脱的
看出, 其
许多品种是变种还是原始独特的物种。机翻