【中文版】

股票是股份公司发行的一种所有权凭证，是股份公司为筹集资金而发行给各个股东作为持股凭证并借以取得股息和红利的一种有价证券。

每一只股票都代表着一家公司的股份，持有股票就意味着拥有公司的一部分。股票的持有者就是公司的股东，他们可以参与公司的经营决策，并获得公司盈利后的分红。

股票的价格并不固定，它会随着市场的供求关系和公司的经营状况而波动。如果公司的经营状况良好，盈利增加，那么股票的价格就会上涨，股东就会获得更多的收益。反之，如果公司的经营状况不佳，亏损增加，那么股票的价格就会下跌，股东的收益就会减少。

购买股票是一种高风险高回报的投资方式。投资者在购买股票时需要谨慎评估自己的风险承受能力和投资目的，选择适合自己的投资策略。

总的来说，股票是股份公司筹集资金和股东参与公司经营决策的一种重要工具，同时也是一种高风险高回报的投资方式。

【英文版】

Stocks refer to ownership certificates issued by joint-stock companies. They are negotiable securities issued by companies to raise funds and distributed to shareholders as a voucher for holding shares, so as to obtain dividends and bonuses.

Each stock represents the shares of a company, and holders of stocks are shareholders of the company, who can participate in the company's management decisions and obtain dividends after the company profits.

The price of stocks is not fixed, but fluctuates with market supply and demand and the company's operating conditions. If the company is in good operating condition and its profits increase, the price of stocks will rise, and shareholders will obtain more benefits. Conversely, if the company's operating conditions are poor, losses increase, then the price of stocks will fall, and shareholder profits will decrease.

Buying stocks is an investment method with high risks and high returns. When investors buy stocks, they need to carefully evaluate their risk tolerance and investment goals to choose a suitable investment strategy.

In general, stocks are an important tool for joint-stock companies to raise funds and for shareholders to participate in the company's management decisions, while also being an investment method with high risks and high returns.