rhythm
英 ['rɪð(ə)m]
美['rɪðəm]
	    - n. 节奏;韵律
 
英英释意
- 1. the basic rhythmic unit in a piece of music;
 - "the piece has a fast rhythm"
 - "the conductor set the beat"
 
- 2. recurring at regular intervals
 
- 3. an interval during which a recurring sequence of events occurs;
 - "the neverending cycle of the seasons"
 
- 4. the arrangement of spoken words alternating stressed and unstressed elements;
 - "the rhythm of Frost's poetry"
 
- 5. 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)