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???(High Frequency Economics)?•???(Rubeela Farooqi)??????????,“??,??????,??” ??:??? “???”????

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??,??,??????????Challenger, Gray & Christmas Inc.????????,?6???48786??????????????????????2020?????,?????????2009???

???(High Frequency Economics)?•???(Rubeela Farooqi)??????????,“??,??????,??” ??:???