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

??,????????3?????????,???,?6??22???????????????,??186??????????,????2021????????????????????11?????????????6?29???,?4000???,??23.8???????

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

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