月经周期

menstrual cycle───[生理]月经周期

menstrual cycles───[生理]月经周期

menstruation───n.[生理]月经；月经期间；有月经

menstruations───n.[生理]月经；月经期间；有月经

construction site───建筑工地；施工场地

menstruating───v.月经来潮（menstruate的现在分词）

mensurational───量度

Women's life stages are based on the reproductive cycle, beginning with menstruation and ending with menopause.───女性的生命阶段基于生殖周期，生殖周期始于月经初潮，止于绝经。

Without the persistent nature of the menstruation cycle, our very existence as a species would be completely altered.───没有稳定的月经周期，人类作为物种的存在会被彻底改变。

special shape and functional activity of vascular vessels were closely related with the cycle of menstruation.───动脉血管的特殊形态与月经的周期密切相关。

The change of women sleeping behavior at menstruation cycle───妇女月经周期睡眠行为变化

The change of women behavior at menstruation cycle───妇女月经周期行为活动的变化