DICT.TW Dictionary Taiwan

 rhythm method 名詞
 安全期避孕法

 rhythm method
      n : natural family planning in which ovulation is assumed to
          occur 14 days before the onset of a period (the fertile
          period would be assumed to extend from day 10 through day
          18 of her cycle) [syn: rhythm method of birth control,
          rhythm, calendar method of birth control, calendar
          method]