fluctuate
verb [intransitive]Verb Forms
| present simple I / you / we / they fluctuate | |
| he / she / it fluctuates | |
| past simple fluctuated | |
| past participle fluctuated | |
| -ing form fluctuating |
to change frequently in size, amount, quality, etc., especially from one extreme to another （大小、數量、質量等）波動；（在…之間）起伏不定 fluctuating prices 波動的價格 The documentary follows the fluctuating fortunes of one marketing company. 這部紀錄片講述了一家營銷公司的興衰。 - fluctuate between A and B
During the crisis, oil prices fluctuated between $20 and $40 a barrel. 在危機時期，每桶石油價格在 20 至 40 美元之間波動。 - + adv./prep.
Temperatures can fluctuate by as much as 10 degrees. 溫差可達 10 度之多。 My weight fluctuated wildly depending on how much I ate. 我的體重會因我吃多少東西而大幅變化。 My mood seems to fluctuate from day to day. 我的情緒似乎天天在變。 The rate of inflation has been fluctuating around 4% for some time. 一段時間以來，通貨膨脹率一直在4%左右波動。
Extra ExamplesTopics Moneyc1The number of boys at the school fluctuates around 100. 該校男生人數在100人左右波動。 The number of unemployed fluctuates between two and three million. 失業人數在 200 萬到 300 萬之間波動。 Traffic congestion fluctuates according to the time of day. 交通擁堵狀況會随一天時段的不同而變化。
Oxford Collocations Dictionaryadverb- considerably
- greatly
- dramatically
- …
- according to
- around
- between
- …
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’.