VERB
行经;来月经
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.
例句
Lean hard-training women athletes may menstruate less frequently or not at all.
身材瘦削而且训练艰苦的女运动员行经可能不那么频繁，或者根本不来月经。