【中文版】

持仓费是指投资者持有期货合约所需支付的费用。在期货市场中，持仓费是期货合约价格的一部分，它是为了补偿期货市场中的交易成本和风险而存在的。

具体来说，持仓费包括交易所收取的手续费、期货公司收取的交易服务费以及期货合约价格波动所产生的盈亏。其中，交易所手续费是按照交易品种和交易量来收取的，而期货公司交易服务费则是根据客户等级和交易量来确定的。

在期货交易中，持仓费的大小对投资者的交易成本和盈利能力有着重要的影响。如果持仓费过高，那么投资者需要支付更高的交易成本，从而降低了盈利能力。反之，如果持仓费过低，那么投资者可能会过度交易，导致风险增加。

因此，投资者在参与期货交易时，需要对持仓费进行充分的了解和评估，以便更好地控制交易成本和风险，提高投资收益。

【英文版】

Positioning fee refers to the payment required for investors to hold futures contracts. In the futures market, the positioning fee is a part of the price of the futures contract and exists to compensate for the trading costs and risks in the futures market.

Specifically, the positioning fee includes the exchange commission, the trading service fee charged by the futures company, and the profit and loss generated by the price fluctuation of the futures contract. Among them, the exchange commission is charged according to the trading品种and trading volume, while the trading service fee of the futures company is determined according to the customer level and trading volume.

The size of the positioning fee has an important impact on the trading costs and profitability of investors in futures trading. If the positioning fee is too high, investors need to pay higher trading costs, thereby reducing their profitability. Conversely, if the positioning fee is too low, investors may trade excessively, leading to an increase in risks.

Therefore, when participating in futures trading, investors need to fully understand and evaluate the positioning fee in order to better control trading costs and risks, and improve investment returns.