中文：

现货保证金是指在期货交易中，由交易所实行的一种制度，要求投资者在买卖期货合约时，按照规定缴纳一定数额的资金作为履行合约的保证。这个保证金可以有效地保障期货市场的正常运转和交易双方的利益。

在现货保证金制度下，投资者需要根据交易所的规定缴纳一定数额的保证金，作为履行期货合约的担保。如果投资者违约，将会受到相应的处罚，如罚款、暂停交易等。因此，投资者需要认真了解现货保证金制度的相关规定和要求，以便更好地参与期货市场。

现货保证金制度的实施可以有效地提高投资者的风险意识和风险承受能力，同时也可以有效地控制市场风险和防范市场操纵行为。此外，现货保证金制度还可以为交易所提供一定的风险控制和监管手段，保障期货市场的公平、公正和透明。

英文：

Spot margin is a system implemented by the exchange in the futures trading, which requires investors to deposit a certain amount of money as a guarantee for the performance of the futures contract according to the regulations when buying or selling futures contracts. This margin can effectively ensure the normal operation of the futures market and the interests of both parties.

Under the spot margin system, investors need to deposit a certain amount of margin as a guarantee for the performance of the futures contract according to the regulations of the exchange. If investors default, they will be subject to corresponding penalties such as fines and suspension from trading. Therefore, investors need to carefully understand the relevant regulations and requirements of the spot margin system to better participate in the futures market.

The implementation of the spot margin system can effectively improve investors' risk awareness and risk-bearing capacity, and also effectively control market risks and prevent market manipulation. In addition, the spot margin system can also provide the exchange with certain risk control and regulatory means to ensure fairness, justice and transparency in the futures market.