【中文版】

大小非是指中国股市中的大额和小额限售解禁股。这些股票在很早以前就已经发行，但因为一些特定原因被限制出售，而如今这些限制已经到期，所以这些股票可以自由流通。

大小非的规模和数量都非常大，一旦大量解禁，就会对市场造成一定的影响。因为这些股票的价格往往比市场价格低很多，所以一旦大量卖出，就会导致股价下跌。

在股市中，大小非是一个重要的概念。投资者需要密切关注大小非的情况，以便做出更加明智的投资决策。例如，如果大额解禁股票数量较大，投资者可以考虑减仓或退出市场，以避免可能的损失。

总之，大小非是股市中的一个重要概念，投资者需要了解其含义和影响，以便更好地把握市场机会，实现投资收益。

【英文版】

"Big和非", also known as "large and small non-tradable shares", refers to a large number of shares that have been restricted from trading due to certain reasons in the Chinese stock market. These restrictions have now expired, making these shares freely tradable.

The size and quantity of big and non-tradable shares are very large, and their impact on the market can be significant once the restrictions expire. Since the prices of these shares are often much lower than the market price, when a large number of them are sold, it can cause the stock price to fall.

In the stock market, the concept of big and non-tradable shares is very important. Investors need to closely monitor the situation of big and non-tradable shares to make more informed investment decisions. For example, if there are a large number of restricted shares that have expired restrictions, investors may consider reducing their positions or exiting the market to avoid potential losses.

In summary, big and non-tradable shares are an important concept in the stock market that investors need to understand its meaning and impact to better grasp market opportunities and achieve investment returns.