中文：

外盘和内盘是股票交易中的两个重要概念。外盘是指在股市中，投资者在交易时间内，以卖一或以上价格申报并成交的股票，也就是以卖一或以上价格买入的股票。内盘则是指投资者在交易时间内，以买一或以上价格申报并成交的股票，也就是以买一或以上价格卖出的股票。

外盘和内盘反映了投资者在交易时间内对股票买卖的需求情况。外盘较大时，说明投资者在交易时间内以卖一或以上价格买入的股票较多，说明买方需求强劲，对股票价格上涨有利。内盘较大时，说明投资者在交易时间内以买一或以上价格卖出的股票较多，说明卖方需求强劲，对股票价格下跌有利。

外盘和内盘的计算方式很简单，只需要在交易软件中查看成交明细即可。在成交明细中，以卖一或以上价格成交的股票为外盘，以买一或以上价格成交的股票为内盘。

外盘和内盘是投资者进行股票交易的重要参考指标之一。投资者可以根据外盘和内盘的变化情况来判断市场买卖情况，从而做出更明智的投资决策。

英文：

External and internal orders are two important concepts in stock trading. External orders refer to the stocks that investors buy at or above the price of selling one during trading hours in the stock market. Internal orders refer to the stocks that investors sell at or below the price of buying one during trading hours in the stock market.

External and internal orders reflect the demand for stock trading during trading hours. When the external order is large, it means that there are more investors buying stocks at or above the price of selling one during trading hours, indicating strong demand for buyers and favorable conditions for stock prices to rise. When the internal order is large, it means that there are more investors selling stocks at or below the price of buying one during trading hours, indicating strong demand for sellers and favorable conditions for stock prices to fall.

The calculation of external and internal orders is simple. You can view the transaction details on the trading software. In the transaction details, the stocks that are bought at or above the price of selling one are external orders, and the stocks that are sold at or below the price of buying one are internal orders.

External and internal orders are one of the important reference indicators for investors to trade stocks. Investors can use changes in external and internal orders to judge market conditions and make more informed investment decisions.