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TOEFL IELTS BNC: 11623 COCA: 12670

fluctuate

verb
/ˈflʌktʃueɪt/
/ˈflʌktʃueɪt/
[intransitive]
Verb Forms
present simple I / you / we / they fluctuate
/ˈflʌktʃueɪt/
/ˈflʌktʃueɪt/
he / she / it fluctuates
/ˈflʌktʃueɪts/
/ˈflʌktʃueɪts/
past simple fluctuated
/ˈflʌktʃueɪtɪd/
/ˈflʌktʃueɪtɪd/
past participle fluctuated
/ˈflʌktʃueɪtɪd/
/ˈflʌktʃueɪtɪd/
-ing form fluctuating
/ˈflʌktʃueɪtɪŋ/
/ˈflʌktʃueɪtɪŋ/
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  1. to change frequently in size, amount, quality, etc., especially from one extreme to another(大小、数量、质量等)波动;(在…之间)起伏不定 synonym vary
    • fluctuating prices波动的价格
    • The documentary follows the fluctuating fortunes of one marketing company.这部纪录片讲述了一家营销公司的兴衰。
    • fluctuate between A and B During the crisis, oil prices fluctuated between $20 and $40 a barrel.在危机时期,每桶石油价格在 20 至 40 美元之间波动。
    • + adv./prep. Temperatures can fluctuate by as much as 10 degrees.温差可达 10 度之多。
    • My weight fluctuated wildly depending on how much I ate.我的体重会因我吃多少东西而大幅变化。
    • My mood seems to fluctuate from day to day.我的情绪似乎天天在变。
    • The rate of inflation has been fluctuating around 4% for some time.一段时间以来,通货膨胀率一直在4%左右波动。
    Extra Examples
    • The number of boys at the school fluctuates around 100.该校男生人数在100人左右波动。
    • The number of unemployed fluctuates between two and three million.失业人数在 200 万到 300 万之间波动。
    • Traffic congestion fluctuates according to the time of day.交通拥堵状况会随一天时段的不同而变化。
    Topics Moneyc1
    Oxford Collocations Dictionaryadverb
    • considerably
    • greatly
    • dramatically
    preposition
    • according to
    • around
    • between
    See full entry
    Word Originmid 17th cent. (earlier (late Middle English) as fluctuation): from Latin fluctuat- ‘undulated’, from the verb fluctuare, from fluctus ‘flow, current, wave’, from fluere ‘to flow’.

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