fluctuated是什么意思？

fluctuated

• v. 波动，涨落，起伏( fluctuate的过去式和过去分词 )；

例句

• His feelings fluctuated between excitement and fear. 他的心情变化不定,有时激动,有时害怕.
• Her family had of late exceedingly fluctuated. 她家里最近连起风波.
• All year she has fluctuated between optimism and despair. 全年当中她时而乐观,时而消沉.

柯林斯高阶英汉双解学习词典释义

• VERB
  变动;波动;上下浮动
  If something fluctuates, it changes a lot in an irregular way.
  例句
  Body temperature can fluctuate if you are ill. 人患病后体温可能会上下波动。 ...the fluctuating price of oil. 油价的浮动