fluctuate
US /ˈflʌk.tʃu.eɪt/
UK /ˈflʌk.tʃu.eɪt/

1.
波动, 起伏, 涨落
rise and fall irregularly in number or amount
:
•
The stock market prices fluctuate daily.
股市价格每天都波动。
•
Her mood often fluctuates between happiness and sadness.
她的情绪经常在快乐和悲伤之间波动。
波动, 起伏, 涨落
rise and fall irregularly in number or amount