: 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
ADJECTIVE | VERB + FLUCTUATION | FLUCTUATION + VERB | PREPOSITIONADJECTIVE➤considerable, 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 + FLUCTUATION➤cause, 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 + VERB➤occur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⋯PREPOSITION➤fluctuation 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。