There exists margin system in futures market; further price volatility, resulting in excessive speculation, and doubling amplify risk.

另外期货市场上保证金制度的存在，进一步引起价格的剧烈变动，导致过度投机，成倍地放大风险。

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The results show that higher PIN leads to (lower) (liquidity) and higher volatility and vice versa. At the same time these concludes disclose the behavior of the price (further) in China stock market.

实证结果表明在中国股票市场中信息交易概率与市场流动性正相关，而与波动性负相关，进一步揭示了中国股市的价格行为。

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The other is that the volatility is assumed to be stochastic and the price of the underlying asset is a levy process, namely we can further promote the model on the basis of the first one.

假设波动率是随机的，且资产价格服从l evy过程，即在前述模型基础上作了进一步推广。

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