???2?19?? (? ?????????????)?????????19??????,????????82?????????????App(??)?

?,?,????????????App?????????????????,??????????????,?????????????“???”??82???????????App(?)?

?,“??”??4?????App???????????????????????,????????????;“??????????????????????”???78????App?????????????????,??????1??????,????????????,??????

?????,??????????,?????????,??????(?????) ?????????:??

??

??:???????????,??????????,??????????????