详细解释:n. 循环节, 叠句
详细解释：
rep.e.tend
n.（名词）A word, sound, or phrase that is repeated; a refrain.叠句：重复的词语、声音或短语；重复句Mathematics The digit or group of digits that repeats infinitely in a repeating decimal.【数学】 循环节：在循环小数中无限重复的数节或一组数节
来源：From Latin repetendum [neuter gerundive of] repetere [to repeat] * see repeat 源自 拉丁语 repetendum [] repetere的中性动形词 [重复] *参见 repeat