不仅如此，一些数据出现反向波动的现象也很常见。
It's also common for some data to move in opposite directions.
但是，只交易1份合约的交易者可以忍受比较大的错误、误算或市场的剧烈反向波动。
But a one-contract trader also can give himself a wide tolerance for errors, miscalculations, or unusually violent market moves where he could find himself on the wrong side.
这两种证券的目的是实现美国国债和债券每日价格波动的反向两倍波幅。
Both these securities are designed to move at twice the inverse of the daily price movement in Treasury notes and bonds.
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