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??7??4? ?????????3???????,??????????,??2018??,?????

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???,???????7???????????????????5??,6?19????????????????????,?27.2?????

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

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