摘要
第四章自然选择(节选)在变化着的生活条件下,生物构造的每一部分几乎都要表现个体差异,这是无可争论的;由于生物按几何比率增加,它们在某年龄、某季节或某年代,发生激烈的生存斗争,这也确是无可争论的;于是。
Chapter4 Natural Selection If during the long course of ages and under varying conditions of life, organic beings vary at all in the several parts of their organisation,and I think this cannot be disputed; if there be, owing to the high geometrical powers of increase of each species, at some age, season,or year,a severe struggle for life, and this certainly cannot be disputed;
