??? ??????????? ??????? ??? ??????? (??? ?? ????? ?? ????????? ????????)????? ???? ?????????? ??? ??? ??????? ??? ??? ?????? ??? ?? ???????: ? ????????? ??? ??????????? ??? ????? ??? ????????.., ??? ????? ???? ??? ?????.That the page satisfies them. Which’s what Google is about above all—enjoyable research intent.In 1998, two graduate learners