an occurrence of menstruatinga first menstruation can be somewhat scary for girls who are unprepared
a first menstruation can be somewhat scary for girls who are unprepared
monthlies, period
menses
in 1686
英语同义词词典收录了63618条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。