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???(丁世均) ????? 18? “?? ?? ????? ??? ??? ?? ??? ???? ??? ???? ??? ???? ??? ???? ?? ??? ??? ??? ??”? ????.

???????? ?? ???? ????? ????? 25%? ????? ??? ??? 1988? ????? 2002? ?? ??? ???? ?? ???? ??? ????.

???(安炳燁) ???????? “???? ???? ??? ?????? ???? ???? ????? ?????? ??? ??? ???? ??”? ???.

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