menstruate /ˈmɛnstrʊˌeɪt/ ( menstruating, menstruated, menstruates )

• 1. 

  V-I When a woman menstruates, a flow of blood comes from her uterus. Women menstruate once a month unless they are pregnant or have reached menopause. 行经 [正式]

  例：

  Lean, hard-training women athletes may menstruate less frequently or not at all.

  清瘦、训练艰苦的女运动员行经可能不那么频繁或根本没有月经。

• 2. 

  menstruation N-UNCOUNT 来潮

  例：

  Menstruation may cease when a woman is anywhere between forty-five and fifty years of age.

  月经可能在女性45至50岁之间停止。