中文：

ST股票是指被特别处理的股票，是指在财务状况或其他状况出现异常的上市公司股票。这种股票被冠以“ST”的标记，以提醒投资者谨慎投资。

ST股票的交易规则与普通股票有所不同。首先，ST股票的日涨跌幅限制为5%，而普通股票的涨跌幅限制为10%。其次，ST股票的投资者需要开通“风险警示板”，才能进行交易。此外，如果上市公司连续两年亏损，则会被实施退市风险警示，如果在第三年继续亏损，则会被暂停上市。

投资ST股票需要谨慎考虑。虽然ST股票的股价较低，但它们的风险也相对较大。投资者需要对上市公司的财务状况、行业前景等进行全面了解和分析，以做出明智的投资决策。此外，投资者还需要注意市场风险和自身风险承受能力，以避免投资失败。

英文：

ST stocks refer to stocks that are specially treated, which refer to stocks of companies that have financial or other abnormal situations. These stocks are labeled with the "ST" mark to remind investors to invest cautiously.

The trading rules for ST stocks are different from ordinary stocks. First, the daily fluctuation limit for ST stocks is 5%, while the fluctuation limit for ordinary stocks is 10%. Second, investors of ST stocks need to open a "risk warning board" to trade. In addition, if a listed company losses for two consecutive years, it will be subject to risk warning, and if it continues to lose in the third year, it will be suspended from trading.

Investing in ST stocks requires cautious consideration. Although the stock prices of ST stocks are low, their risks are also relatively high. Investors need to conduct comprehensive research and analysis of the financial conditions, industry prospects, and other information of listed companies to make informed investment decisions. In addition, investors also need to pay attention to market risks and their own risk tolerance to avoid investment failures.