rhythm

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)

自然计划生育，假设排卵发生在开始前14天（可生育期从周期的第10天延长到第18天）

rhythm method of birth control

rhythm method

calendar method of birth control

calendar method

recurring at regular intervals

定期重复

regular recurrence

the arrangement of spoken words alternating stressed and unstressed elements

重音与非重音交替的口语排列

the rhythm of Frost's poetry

弗罗斯特诗歌的节奏

speech rhythm

the basic rhythmic unit in a piece of music

音乐中的基本节奏单位

the piece has a fast rhythm

这首曲子节奏很快

the conductor set the beat

指挥家定下节拍

beat

musical rhythm

an interval during which a recurring sequence of nts occurs

事件重复发生的间隔

the nr-ending cycle of the seasons

四季无休止的循环

cycle

round