VERB 行經;來月經 When a woman menstruates, a flow of blood comes from her womb. Women menstruate once a month unless they are pregnant or have reached the menopause. 行經;來月經 [formal]
Lean hard-training women athletes may menstruate less frequently or not at all. [VERB]
身材瘦削而且訓練艱苦的女運動員行經可能不那麽頻繁,或者根本不來月經。
menstruation
Menstruation may cease when a woman is anywhere between forty-five and fifty years of age.