好英语网中文：
卖出股票未成交是指投资者在股票交易市场中下达卖出指令后，未能成功将股票卖出。这种情况通常发生在以下几种情况下：
一、市场行情变化。在股票交易市场中，行情变化是非常快的，投资者在某一时刻下达卖出指令后，由于市场行情的变化，该股票的价格已经出现大幅度的波动，导致投资者的卖出指令无法成交。
二、卖出价格不合理。投资者在卖出股票时，需要设定一个合理的卖出价格，如果设定的卖出价格过高或过低，都可能导致卖出未成交。
三、卖出数量过大或过小。投资者在卖出股票时，需要设定一个合理的卖出数量，如果设定的卖出数量过大或过小，都可能导致卖出未成交。
四、交易系统故障。在股票交易市场中，交易系统可能会出现故障，导致投资者的卖出指令无法及时成交。
对于投资者来说，如果遇到卖出股票未成交的情况，需要及时了解原因并采取相应的措施。可以通过查看交易明细、调整卖出价格或数量、联系交易平台客服等方式来解决问题。同时，也需要注意加强风险控制，避免过度交易等行为，以减少未成交的风险。
英文：
Selling stocks that haven't been traded refers to an investor's failure to successfully sell stocks after placing a selling order in the stock trading market. This situation usually occurs under the following circumstances:
Market conditions change. In the stock trading market, market conditions change very quickly. After an investor places a selling order at a certain moment, due to changes in market conditions, the price of the stock has already undergone significant fluctuations, resulting in the investor's selling order being unable to be filled.
The selling price is not reasonable. When investors sell stocks, they need to set a reasonable selling price. If the selling price is too high or too low, it may lead to the sale not being completed.
The selling quantity is too large or too small. When investors sell stocks, they need to set a reasonable selling quantity. If the selling quantity is too large or too small, it may lead to the sale not being completed.
Trading system failure. In the stock trading market, the trading system may experience malfunctions, resulting in investors' selling orders being unable to be filled promptly.
For investors, if they encounter the situation of selling stocks that haven't been traded, they need to understand the reasons and take appropriate measures promptly. They can solve the problem by checking the transaction details, adjusting the selling price or quantity, contacting the customer service of the trading platform, etc. At the same time, they also need to strengthen risk control and avoid excessive trading and other behaviors to reduce the risk of unfilled sales.
