1·Besides, we analyse the reason that the recapitulation can only be simple and rapid, and a time equivalent of conversion relation between the time of ontogeny and phylogeny is also defined.
此外，还分析了重演只能是“简单而迅速”的原因，并定义了一个表征个体发育时间与系统发育时间换算关系的时间当量。
2·Haeckel used embryology extensively in his recapitulation theory, which embodied a progressive, almost linear model of evolution.
海克尔在他的重演论中大量使用胚胎学知识，使一个渐进的、几乎线性的进化模型得以具体化。