［?? ????］???? ??? ???? ?? ? ??

???? ??? ??? ???? ???? ??????? ?? ? ?? ??? ? ? ??? ???.

??? ??????? ???? ??? ??? ???? 21? “????? ??? ????? ??? ????? ????? ????? ????”? ???? ??? 2? ?? ??? ???? ? ????? ??? ???? ??.

???? UPI???? ???? “????? ??? ????? ??? ????? ?? ?? ??? ???? ????? ??? ???? ????? ??? ??? ??? ? ??? ??? ????? ??? ???? ?”??? ??.

〈????(? ?????)UPI??〉