Speculators play the market in the hope of making a quick fortune.

投机者买卖股票,期望快速获得财富.

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He used to play the market.

他过去一直做股票的投机生意.

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I now play the market, is not based on the forecast, but the operating rules.

我现在炒股票, 依据的不是预测, 而是操作法则.

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