中文：

公司回购股票是指公司通过购买自己发行的股票来减少流通中的股票数量，从而提高每股收益和股价的行为。公司回购股票的原因有多种，其中最主要的目的是提高公司的盈利能力和股价，以吸引更多的投资者和资金。

首先，公司回购股票可以增加公司的盈利能力和股东的收益。回购股票可以减少公司的流通股本，从而提高每股收益和净资产收益率等财务指标，进而提高公司的盈利能力和股东的收益。此外，回购股票还可以提高公司的股价，从而吸引更多的投资者和资金。

其次，公司回购股票还可以用于股权激励计划。通过回购股票，公司将可以更好地实现员工持股计划，从而激发员工的工作积极性和创造力，并增强员工的归属感和忠诚度。

最后，公司回购股票还可以用于市场调控和公司治理。回购股票可以增加公司的控股权，从而更好地控制和支配公司的发展和运营。此外，回购股票还可以用于公司治理结构的完善和调整，从而更好地保护投资者的利益和维护市场的稳定。

总之，公司回购股票可以提高公司的盈利能力和股价，吸引更多的投资者和资金，同时还可以用于股权激励计划和市场调控和公司治理等方面。这些都有利于公司的长期发展和价值的提升。

英文：

Company repurchases of shares refer to the act of companies purchasing their own issued shares to reduce the number of shares in circulation, thereby improving earnings per share and share price. There are various reasons for companies to repurchase shares, the main purpose being to improve the company's profitability and stock price in order to attract more investors and funds.

Firstly, company repurchases of shares can increase a company's profitability and earnings per share. Repurchasing shares can reduce the company's outstanding shares, thereby improving financial indicators such as earnings per share and net asset yield, and enhancing the company's profitability and shareholder returns. In addition, repurchasing shares can also increase a company's stock price, attracting more investors and funds.

Secondly, company repurchases of shares can also be used for equity incentive plans. By repurchasing shares, a company can better implement employee shareholding plans, stimulating employees' work enthusiasm and creativity, enhancing their sense of belonging and loyalty.

Finally, company repurchases of shares can also be used for market regulation and corporate governance. Repurchasing shares can increase a company's controlling power, allowing better control and direction over the company's development and operations. In addition, repurchasing shares can also be used to improve and adjust corporate governance structures, protecting investors' interests and maintaining market stability.

In summary, company repurchases of shares can improve a company's profitability and stock price, attracting more investors and funds. They can also be used for equity incentive plans, market regulation, and corporate governance, all of which are beneficial to the company's long-term development and value enhancement.