??????one. ???? ???? ?? ?????????? ??? ???? ??? ??? ?? ?? ? ????. ??? ???? ?? ??? ??? ?????:1??? (??): ? fifty,000? ~ 70,000?3??? (??): ? one hundred thirty,000? ~ one hundred eighty,000?6??? (?? ???): ? 250,000? ~ three hundred,000???? ?? ? ???? ?? ??? ??? ??? ? ??, ?? ??? ???? ??? ?????.2. ????? ??? ? ?? ?????? ??? ??? ?? ??? ? ????. ??? ???? ???