1. 固定音型不断重复的短旋律或短句，通常在同一音高的同一部位A short melody or phrase that is constantly repeated, usually the same part at the same pitch.2. 反复的表示或描述重复的动作Expressing or designating repeated action.3. 如果我们观察水波的横截面，我们会看到波形是按一定的间隔重复的。If we look at a cross section of a water wave, we may see that the wave form repeats itself at regular intervals.4. 反复记号通常有两个竖直的附点组成的记号，指示应重复的节段A sign usually consisting of two vertical dots, indicating a passage to be repeated.
如果是作为副词，想表达前面的动词不断重复着，可以用repeatedly，如：She was bullied by her high school classmates repeatedly, so it made her very sensitive to campus violence and bullyingrepeatedly相当于词组：again and again这2个词意思完全相同，唯一的不同，就是看说话人，是想说长话，还是短话参考：www. merriam-webster. com/dictionary/repeatedly
repeat; repetition; duplicate; reiteration; echo repeat 英[rɪˈpi:t] 美[rɪˈpit] vt. 重复; 复述，背诵; vi. 重做; 重复投票; n. 重复; （节目） 重演; 重复的事物; [例句]He repeated that he had been misquoted他反复说他的话被错误引用了。[其他] 第三人称单数：repeats 复数：repeats 现在分词：repeating过去式：repeated 过去分词：repeated repetition 英[ˌrepəˈtɪʃn] 美[ˌrɛpɪˈtɪʃən] n. 重复，反复; 背诵; 复制品，副本; [乐] 复唱，复奏，重奏; [例句]Today the city government has taken measures to prevent a repetition of last year's confrontation今天市政府已经采取措施，防止去年的冲突重演。[其他] 复数：repetitions duplicate 英[ˈdju:plɪkeɪt] 美[ˈdu:plɪkeɪt] v. 重复; 复制; 复印; adj. 复制的; 副本的; 完全一样的; n. 副本; 完全一样的东西; 复制品; [例句]His task will be to duplicate his success overseas here at home他在海外取得了成功，现在的任务就是要在国内再创辉煌。[其他] 第三人称单数：duplicates 复数：duplicates 现在分词：duplicating过去式：duplicated 过去分词：duplicated reiteration 英[rɪˌɪtə'reɪʃn] 美[rɪˌɪtə'reɪʃn] n. 反复地说，重申; [例句]The weary reiteration of the same old arguments.对陈旧论据的令人厌倦的重复。echo 英[ˈekəʊ] 美[ˈekoʊ] n. 回声，共鸣; （言语、作风、思想等的） 重复; 重复者; [无线电] 回波; vt. 重复，效仿; 随声附和; 类似; 发射（声音等）; vi. 被重复; 产生回响; 充满回声; [例句]He heard nothing but the echoes of his own voice.他只听见了自己的回音。[其他] 第三人称单数：echoes 复数：echoes 现在分词：echoing过去式：echoed 过去分词：echoed
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