性器官-女性性器官
The Sex Organs - The Female Sex Organs

月经周期：月经周期概述

为了更好理解，往下将详细顺次描述月经周期的三个时相。

1. 准备排卵
2. 准备植入
3. 月经

The Menstrual Cycle: Description of the cycle

For a better understanding, the following offers, in sequence, a detailed description of the three phases of the cycle:

1. Preparing for Ovulation
2. Preparing for Implantation
3. Menstruation