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单词“fluctuate”是一个动词，意为“波动，浮动”。具体解释如下：
1. 意思：这个词的基本意思是“波动，振动”，可以指物理上的波动，也可以指数值上的波动或变动。
2. 读音：它的发音为 [ˈflʌktueɪt]，是一个简单的动词，通常在句子中以原形形式出现。
3. 例句：I noticed that the price of my ticket fluctuated slightly throughout the day. （我注意到我的票价格一整天都在轻微波动。）
以下是一些含有“fluctuate”的例句，帮助您更好的理解和使用这个单词：
1. Energy prices are constantly fluctuating, making it difficult to predict the future cost of electricity. （能源价格不断波动，使得预测未来电力的成本变得困难。）
2. The stock market has been fluctuating recently, causing some investors to be nervous. （股市近来一直波动，使得一些投资者感到紧张。）
3. Average weekly sales fluctuated slightly, but still managed to maintain the overall upward trend. （周平均销售稍有波动，但整体趋势还是呈上升状态。）
4. Temperature frequently fluctuates in a year according to season, sunshine duration and humidity, all these affect health problems, lifestyle, transport logistics, recreation activities, security forces, and all the related professions in each area.（气温根据季节、日照时长和湿度等因素而逐年变化，这种变化对健康问题、生活方式、运输物流、娱乐活动、安全部门以及各地区所有相关职业都会产生影响。）
5. Rainfall patterns have fluctuated in recent years, resulting in more or less severe droughts and floods. （降雨模式近年来一直在波动，导致干旱和洪水或轻或重。）
6. Your mood fluctuates with the weather - or at least it does for me. （你的情绪会随着天气而波动——至少对我而言是这样。）
7. Fuel prices fluctuate depending on world events and local supply and demand. （燃油价格会随着世界事件以及当地供求状况的波动而波动。）
8. The exchange rate fluctuates daily, but generally moves in one direction or another for weeks or months at a time. （汇率每日都有波动，但通常一段时间内会朝一个方向或另一个方向移动。）
9. Prices of goods and services fluctuate with changes in demand and supply. （商品和服务的价格随着需求和供应的变化而波动。）
10. Over the past few years, interest rates have fluctuated regularly between lows and highs. （在过去几年中，利率在高低之间有规律地波动。）
总的来说，“fluctuate”在英语中是一个非常常用的单词，它表示的是一种不稳定的、上下波动的状态。
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