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TOEFL BNC: 6226 COCA: 8463

— fluctuation

/ˌflʌktʃəˈweɪʃən/ noun, plural fluctuations
[count]
[noncount]
TOEFL BNC: 6226 COCA: 8463

fluctuation

noun

fluc·​tu·​a·​tion ˌflək-chə-ˈwā-shən How to pronounce fluctuation (audio)
-chü-ˈā-
plural fluctuations
: an act or instance of fluctuating : an irregular shifting back and forth or up and down in the level, strength, or value of something
Small fluctuations in prices are to be expected.
Some fluctuation in real estate values is not unusual.
North American species in general, having contended with blazing July days and frosty September nights as they evolved, are much more tolerant of temperature fluctuations than tropical species are. Jonathan Franzen
fluctuational
ˌflək-chə-ˈwā-shnəl How to pronounce fluctuation (audio)
-shə-nᵊl
-chü-ˈā-
adjective

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of fluctuation was in the 15th century
TOEFL BNC: 6226 COCA: 8463
fluctuation

noun

ADJECTIVE | VERB + FLUCTUATION | FLUCTUATION + VERB | PREPOSITION ADJECTIVEconsiderable, large, wide, wild相當大的/很大的/大範圍的/劇烈的波動local, minor, small局部的/次要的/不大的波動rapid快速波動short-term短期波動cyclical, periodic, seasonal循環性/週期性/季節性波動seasonal fluctuations in the demand for fuel燃料需求的季節性波動annual, daily年度的/每日的波動random隨機性波動climatic, hormonal, temperature氣候/荷爾蒙/溫度波動currency, economic, exchange-rate, market, price貨幣/經濟/匯率/市場/價格波動VERB + FLUCTUATIONcause, produce引起/產生波動factors which cause these exchange-rate fluctuations引起匯率波動的因素be subject to, experience易於/經歷波動The number of students can be subject to considerable fluctuation.學生的數量可能會波動很大。FLUCTUATION + VERBoccur波動出現the climatic fluctuations that have occurred over the last ten years過去 10 年出現的氣候波動變化cause sth波動引起⋯PREPOSITIONfluctuation in在⋯方面的波動There have been wide fluctuations in oil prices in recent years.近年來石油價格有大幅度波動。

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