Once we enter a futures trade we know that we must exit that trade within a limited period of time or we are going to be in trouble because the contract will expire.

一旦我们进入期货市场，我们知道在一定时间内我们必须退出市场，因为期货合约是有期限的。

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Once we enter a futures trade we know that we must exit that trade within a limited period of time or we are going to be in trouble because the contract will expire.

一旦我们进入期货市场，我们知道在一定时间内我们必须退出市场，因为期货合约是有期限的。

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