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???? ?? ???. ???? ???, ???? ????? ?53? ??????? ??????? ??????
▽????―?????(3?)〓???? ???. ??? ??? ???? ???? ??? ??? ????.
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2??? ??? ??? ????? ???? ?? ? 2??? ??? ?????, ‘??? ??’ ????? 8
▽2??(16??·?????) △??―??(9?) △??―??(11?30?) △??―??(14?) △??―???
▽???―???(11?30?)〓???? ??? ?? ??? ???? 8?? ??? ???? ??? ???? ?
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‘??? ??’ ????? ??? ?? ???? ????? ?? ??? ?? ???? ??? ??? 8?
‘9?? ???? ???? ??? ??? ???. ??? 2?? 40?? ?? ?????? ??? ?? ???.’
? ????? ‘???’? ?? ????. ??? 4? ???? ???? ?????? ????? ?53? ?
70~80?? ????? ??? ??? ???? ?? ?? ‘??? ??’ ????? ‘?? ??’ ????