【中文版】

波浪理论是一种分析股票市场波动的方法，由美国投资家艾略特在20世纪30年代创立。波浪理论认为，股票市场的走势呈现出一种波浪状，这种波浪具有特定的形态和比例关系，可以通过观察这些形态和比例关系来预测未来的市场走势。

波浪理论的核心是五个主波，分别是上升波、修正波、上升波、主要回档波和下降波。这些主波之间存在一定的比例关系，而且每个主波内部也包含着更小的波动。通过观察这些波动，投资者可以找到股票市场的买卖点，从而获得投资收益。

波浪理论的应用需要具备一定的技术和分析能力，如果使用不当，也可能会带来一定的风险。因此，投资者应该在实际操作中结合其他技术分析和基本面分析方法，制定科学合理的投资策略。

【英文版】

Wave theory is an analysis method for stock market fluctuations, which was founded by American investor Ralph Nelson Elliott in the 1930s. Wave theory believes that the trend of the stock market shows a wave-like shape, and these waves have specific patterns and proportional relationships that can be used to predict future market trends by observing these patterns and relationships.

The core of wave theory is five main waves, including ascending wave, corrective wave, ascending wave, major retracement wave and descending wave. There are certain proportional relationships between these main waves, and each main wave also contains smaller fluctuations within it. By observing these fluctuations, investors can find the buy and sell points in the stock market to obtain investment returns.

The application of wave theory requires a certain level of technical and analytical skills, and if used incorrectly, it may also bring certain risks. Therefore, investors should combine other technical and fundamental analysis methods in practical operations to develop a scientific and reasonable investment strategy.