单雌蕊的英文：
simple pistil

simple是什么意思：
adj. 简单的；单纯的
n. 笨蛋

Simple pushbuttons for simple functions are good.
对于简单的功能来说，简单的按钮就足够了。

This book has a simple premise:
本书有一个简单的前提：

He is Spaniard pure and simple
他是一个纯血统的西班牙人

To hold an estate in fee simple
持有无限制的完全保有土地所有权的地产

It is an object of simple construction.
它是一个简单结构的建筑物。

pistil是什么意思：
n. 雌蕊

The ovule - bearing lower part of a pistil that ripens into a fruit.
子房雌蕊中含有胚珠的较底的部分，成熟为果实

Pollen has to travel from the stamens, where it is formed, to the pistils, where it is needed.
花粉必须从产生花粉的雄蕊转移到需要花粉的雌蕊上去。

Having either stamens or a pistil only.Used of a flower.
不完全的只有雄蕊或雌蕊的。用于描述花

"Relating to or designating an organ, such as a pistil or an ovary, that functions in producing seeds after fertilization."