英语语法分析

Pollen is carried to the pistil by wind.

花粉通过风传播到雌蕊上。

The stigma is the sticky knob at the top of the pistil.

柱头是长在雌蕊最顶端的带有粘性的球。

A flower is made up of four parts: the sepal, petal, stamen and pistil.

一朵花由四部分组成：花萼，花瓣，雄蕊和雌蕊。