送交者: WM 于 May 16, 2002 23:43:18:
回答: WM好，看了楼下你与日尧的讨论 由 小沙 于 May 16, 2002 16:34:14:
Hi, Xiaosha,
Actually, the cycle is much different among females. Most of females' cycles are about 30 days, but someone's is shorter (eg.23 days) or longer (35 days). It doesn't matter how short or how long it is as long as you have your own cycle.
Good night.