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、数量、质量等）波动；（在…之间）起伏不定 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 ExamplesTopics Moneyc1The 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。
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’.