【中文版】

现货空单是指在现货交易中，投资者通过卖出期货或期权合约的方式，获取了以某个价格卖出相关资产的权利。这种交易行为也被称为“做空”，是一种赚取下跌市场收益的投资策略。

当投资者认为市场会下跌时，他们可以选择卖出期货或期权合约，从而锁定一个未来的卖出价格。如果市场价格如期下跌，投资者就可以以更低的价格买入相关资产，并按照之前锁定的价格卖出，从而实现盈利。

现货空单的优点在于，当市场价格下跌时，投资者可以获得收益。然而，如果市场价格上涨，投资者将面临损失。因此，现货空单是一种风险较高的投资策略，需要投资者具备较高的市场判断能力和风险管理能力。

在现货市场中，空单通常被视为一种对冲工具，可以帮助投资者降低投资组合的风险。然而，如果投资者没有正确把握市场走势或者没有及时平仓，空单也可能会放大投资者的损失。

总的来说，现货空单是一种高风险、高收益的投资策略，需要投资者具备较为全面的投资知识和经验。在进行现货空单交易时，投资者应该充分了解市场情况，制定好投资策略，并严格控制风险。

【英文版】

Spot short position refers to an investor's sale of futures or option contracts in the spot market, obtaining the right to sell the relevant asset at a certain price. This trading behavior, also known as "shorting", is a investment strategy to earn returns in a falling market.

When investors believe that the market will fall, they can choose to sell futures or option contracts, locking in a future selling price. If market prices fall as expected, investors can buy the relevant asset at a lower price, sell at the previously locked-in price, and achieve profits.

The advantage of spot short positions is that when market prices fall, investors can obtain returns. However, if market prices rise, investors will face losses. Therefore, spot short positions are a high-risk investment strategy that requires investors to have high market judgment and risk management abilities.

In the spot market, short positions are often seen as a hedging tool that can help investors reduce the risk of investment portfolios. However, if investors do not correctly grasp market trends or do not close positions promptly, short positions may also amplify investors' losses.

Overall, spot short positions are a high-risk and high-return investment strategy that require investors to have comprehensive investment knowledge and experience. When trading spot short positions, investors should fully understand market conditions, develop investment strategies, and strictly control risks.