英语语法分析

Biologists can infer how species are related evolutionarily by comparing DNA sequences for the same genes in different species.

生物学家可以通过比较不同物种中相同基因的 DNA 序列来推断物种之间的进化关系。

Evolutionarily speaking, people in this age group are at a stage in which they can prepare to find a mate and start their own family while separating from parents and striking out on their own.

从进化的角度来说，这个年龄段的人正处于这样一个阶段：他们可以在与父母分开、自谋生计的同时，为寻找伴侣和组建自己的家庭做准备。

The latter two means were evolutionarily derived from entomophily in different, independent events.

后两种手段是在不同的、独立的虫媒传粉中演化而来的。