?????????? ( ???? ?? ??????? ?????) ??? ???? ????? ?? ?? ?????? ???? ?? ????? ?? ????? ??? ?? ????? ??? ?? ??? ???? ???????? ???? ??? ?? ??? ??? ???? ?? ??? ? ???? ??? ????? ?? ????? ???? ???? ?????????? ?????? ???? ?? ???? ???? ???? ???????? ?? ????? ? ???? ??? ?? ?? ??? ? ??? ???? ???Karachi, Pakistan's greatest city, is usually a bustling econom