rhythm methods

• [医] 安全期避孕法

rhythm methods的英文翻译是什么意思，词典释义与在线翻译：

英英释义

名词 rhythm method:

1. 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)