喜樂美語
  1. 1vC2/ˈflʌktʃueɪt/波動；起伏

    If a price or amount fluctuates, it keeps going up and down again and again.

    示範例句 · Example

    Snack prices at the school store fluctuate from week to week.

    逐字學校商店的點心價格每週到每週波動。

    「fluctuate」講的是「數字或量一直上下來回」——價格、溫度、人數、成績都可以用。核心畫面可以想成「像波浪一樣：高→低→高」。比 change 更具體：change 只說「有改變」；fluctuate 特別說「上下來回變」。比 vary 更「波浪」：vary 常是「依情況不同」；fluctuate 常是可測量的量在高低之間擺動。常見骨架：prices fluctuate、fluctuate between A and B、fluctuate wildly。

    常見搭配

    • prices fluctuate

      價格波動；價錢上下變

      prices keep going up and down

      Fruit prices fluctuate when the weather changes.

    • fluctuate wildly

      劇烈波動；大幅起伏

      to go up and down a lot / with big swings

      Snack prices fluctuate wildly before long holidays.

    • fluctuate between A and B

      在 A 與 B 之間波動

      to keep moving between two levels

      Her weekly reading time fluctuates between 20 and 40 minutes.

    • fluctuate around

      在……上下波動

      to move up and down near a number

      The club's members fluctuate around 25 each month.

    • fluctuate from year to year

      逐年波動；每年高低不同

      to change up and down each year

      Bird counts in the park fluctuate from year to year.

    • rates fluctuate

      費率／利率波動

      interest / exchange / fee rates keep going up and down

      Library late fees do not fluctuate — they stay the same.

    • numbers fluctuate

      數字／人數波動

      counts or amounts keep going up and down

      Visitor numbers fluctuate on rainy weekends.

    意思相近

    varyoscillateswingwaverrise and fall

    用法接近

    changekeep changinggo up and downvaryshift

    意思相反

    stabilizeremain steadystay constanthold steady

core核心畫面

Picture a line on a chart that will not settle: up a bit, down a bit, up again. Nothing is heading anywhere in particular — the movement itself, back and forth, is the whole point of the word.

可以想成：圖表上一條靜不下來的線——往上一點、往下一點、又往上。它沒有明確要去哪裡，重點就在那個來回擺動本身。這也是它跟 rise（上升）、fall（下降）最大的不同：那兩個字有方向，fluctuate 沒有。

容易混在一起的字在訂閱裡。容易混在一起的字需要訂閱帳號。

同家族的字

過去式 fluctuated過去分詞 fluctuated-ing fluctuating三單 fluctuates

意思相近

varyoscillateswingwaverrise and fall

用法接近

changekeep changinggo up and downvaryshift

意思相反

stabilizeremain steadystay constanthold steady

原始詞典資料7 筆記錄

以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。

fluctuateverb/ˈflʌkt͡ʃu.eɪt/

  • 1

    To vary irregularly; to swing.

  • 2

    To undulate.

    • One of them, at great Expence of Algebra, proves, that the Motes, which in Scotomias, we seem to have in our Eyes, are not real Bodies fluctuating in them.
  • 3

    To be irresolute; to waver.

    • I fluctuated between wishing he was back home and wishing I'd never met him.
  • 4

    To cause to vary irregularly.

  • 5

    rareTo rise and fall as a wave; to be tossed up and down the waves.

fluctuateadj/ˈflʌkt͡ʃu.eɪt/

  • 1

    obsoleteTossed up and down the waves.

  • 2

    obsoleteWavering, fickle.

摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。