股票的地心引力是指股票价格受到市场整体趋势的影响，如同地心引力一样，使股票价格围绕着价值上下波动。具体来说，当市场整体趋势向上时，股票价格往往也会随之上涨，反之亦然。

这种现象产生的原因主要是因为市场参与者对未来市场的预期和情绪的影响。当市场整体趋势向上时，投资者对市场的信心增强，买入意愿增加，从而推动股票价格上涨。相反，当市场整体趋势向下时，投资者对市场的信心减弱，卖出意愿增加，从而推动股票价格下跌。

此外，股票的地心引力还受到公司业绩、行业前景、宏观经济等因素的影响。如果公司业绩良好，行业前景光明，宏观经济稳定，那么股票价格往往会得到地心引力的支撑而上涨。反之，如果公司业绩下滑，行业前景暗淡，宏观经济不稳定，那么股票价格往往会受到地心引力的压制而下跌。

英文对照阅读

What is the meaning of "stock gravity"?

Stock gravity refers to the influence of the overall market trend on stock prices, which makes stock prices fluctuate around value like gravity. Specifically, when the overall market trend is upward, stock prices tend to rise accordingly, and vice versa.

The reason for this phenomenon is mainly due to the impact of market participants' expectations and sentiment on the future market. When the overall market trend is upward, investors' confidence in the market increases, and their willingness to buy increases, thereby driving stock prices higher. Conversely, when the overall market trend is downward, investors' confidence in the market weakens, and their willingness to sell increases, thereby driving stock prices lower.

In addition, stock gravity is also affected by factors such as company performance, industry prospects, and macroeconomics. If a company performs well, the industry prospects are bright, and the macroeconomy is stable, then stock prices tend to be supported by gravity and rise. Conversely, if a company's performance declines, the industry prospects are dim, and the macroeconomy is unstable, then stock prices tend to be suppressed by gravity and fall.