The reasonable setting of margin system is to make sure index futures transaction in efficient and safe operation.

保证金制度的合理设定是确保股指期货交易高效和安全进行的保证。

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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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Through contrasting the margin system of China futures markets with those of international markets, it points out the shortage of our current margin system.

通过对比我国的保证金制度与国际各大成熟期货市场保证金制度的差异研究，指出我国现行保证金制度存在的不足之处。

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The promise of liquidity was all that was needed to keep margin calls from cratering the financial system.

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