fluctuated

/ˈflʌktjʊˌeɪt/
[I]
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 SYN vary
fluctuating prices
波动的价格
~ between A and B
During the crisis, oil prices fluctuated between $20and$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 mood seems to fluctuate from day to day.
  我的情绪似乎天天在变。