中文：

股价是由多种因素共同控制的。其中，市场供需关系是最基本的影响因素，即当股票市场需求增加时，股价就会上涨，反之亦然。此外，公司业绩、行业前景、政策环境、宏观经济环境等因素也会影响股价的走势。

首先，公司业绩是影响股价的重要因素之一。当公司业绩良好时，投资者对公司的未来发展抱有更高的期望，从而推动公司股票价格上涨。相反，如果公司业绩不佳，投资者可能会对公司的未来发展失去信心，导致公司股票价格下跌。

其次，行业前景也会影响股价的走势。如果某个行业前景良好，那么投资者可能会对相关行业的股票产生更高的热情，从而推动该行业的股票价格上涨。相反，如果某个行业前景不佳，投资者可能会对该行业的股票失去信心，导致该行业的股票价格下跌。

此外，政策环境和宏观经济环境也会影响股价的走势。例如，政府政策的调整可能会导致投资者对某些行业的投资热情发生变化，从而影响相关行业的股票价格。同时，经济周期的波动也可能会对股市产生影响，当经济处于上升周期时，股市表现通常会较好，而当经济处于下行周期时，股市表现通常会较弱。

最后，投资者的情绪也是影响股价走势的重要因素之一。例如，当投资者情绪高涨时，股市表现通常会较好，而当投资者情绪低落时，股市表现通常会较弱。

综上所述，股价是由多种因素共同控制的，包括市场供需关系、公司业绩、行业前景、政策环境、宏观经济环境以及投资者情绪等。这些因素的变化可能会对股市的走势产生直接影响。

英文：

The stock price is controlled by multiple factors. Among them, market supply and demand are the most basic factors, i.e., when the stock market demand increases, the stock price will rise, and vice versa. In addition, factors such as company performance, industry prospects, policy environment, macroeconomic environment, and investor sentiment will also affect the trend of the stock price.

Firstly, company performance is one of the important factors affecting the stock price. When a company performs well, investors have higher expectations for the company's future development, thus driving up the company's stock price. On the contrary, if a company performs poorly, investors may lose confidence in the company's future development, leading to a decline in the company's stock price.

Secondly, industry prospects will also affect the trend of the stock price. If the prospects of a certain industry are good, investors may have higher enthusiasm for stocks related to that industry, thus driving up the stock price of that industry. On the contrary, if the prospects of an industry are not good, investors may lose confidence in the stocks of that industry, leading to a decline in the stock price of that industry.

In addition, the policy environment and macroeconomic environment will also affect the trend of the stock price. For example, government policy adjustments may cause investors to change their investment enthusiasm for certain industries, thereby affecting the stock prices of related industries. At the same time, fluctuations in the economic cycle may also affect the stock market. When the economy is in an upward cycle, stock market performance is usually good, while when the economy is in a downward cycle, stock market performance is usually weak.

Finally, investor sentiment is also an important factor affecting the trend of the stock price. For example, when investor sentiment is high, stock market performance is usually good, while when investor sentiment is low, stock market performance is usually weak.

In summary, the stock price is controlled by multiple factors, including market supply and demand, company performance, industry prospects, policy environment, macroeconomic environment, and investor sentiment. Changes in these factors may directly affect the trend of the stock market.