fluctuate的解释

1. （使）波动，变动，浮动
2. 动摇（不定），使动摇
3. 【物】脉动
4. 起落，起伏（变化），起伏不定，上下，不稳定，（使）涨落，使起伏

1. cause to fluctuate or move in a wavelike pattern
2. move or sway in a rising and falling or wavelike pattern;

   "the line on the monitor vacillated"
   

3. be unstable;

   "The stock market fluctuates"
   

1.变动;波动;上下浮动
If somethingfluctuates, it changes a lot in an irregular way.

e.g. Body temperature canfluctuate if you are ill.
人患病后体温可能会上下波动。
e.g. ...the fluctuating price of oil.
油价的浮动

1. The price of vegetables fluctuates seasonally.
   蔬菜的价格随季节变动。

• The Committee..fluctuates, new members constantly coming in, and old ones going out.

  出自：J. Jay

• She fluctuated between irritation and interest.

  出自：V. Woolf

fluctuate, sway, swing

这组词都可表示“前后、上下、来回摇摆”。其区别是：

swing指一边或一头固定在某处而另一边或另一头成弧形摆动; fluctuate指没有规律地上下起伏、波动; sway指灵活或不稳定的东西缓慢地晃动。