A combination of a put and a call with the same strike price, in which both are bullish, called synthetic long futures.

由两个有相同行使价的看跌和看涨期权形成的组合，同时二者都看跌，叫做组合卖出期货。

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A combination of a long futures contract and a long put, called a synthetic long call.

由买入一个期货合同和买入一个看跌期权的组合，就叫做组合买入看涨。

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Also, a combination of a long futures contract and a short call, called a synthetic short put.

同时，买进期货合同和卖出一个看涨期权的组合，叫做组合卖出看跌期权。

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