menstrual [ˈmɛnstruəl]

例句:

• The average length of a woman's menstrual cycle is 28 days.
  妇女的平均月经周期是28天。
  
• Methods: Menstrual changes of 209 infertile women with endometriosis in hospital were analysed.
  方法: 对该院209例子宫内膜异位症不孕妇女的月经状况进行了调查分析.
  
• Clinical bleeding may have menstrual period, or contact bleeding.
  临床上可有月经期出血, 或接触性出血.
  
• This cycle is known as the 'menstrual cycle'.
  来自BBC
• Some were associated with migraine headaches, others with a menstrual period.
  来自WSJ
• Changes may occur in the lump with the menstrual cycle, being more obvious just before a period.
  来自BBC