??????“?????????” ???

????:??????app????:?????

????2?????18???? (? ?????????????)???????????18??,???????????????????,??“?????”,??????????????????????,??????????????????“????????”?????,???,????

?????“???????”??????,??????????????????,???????,????????50???????????(???)?,??500??,???????????????1-3????????????????????????????,??????????????0.3%-0.5%/????????,??????????,????????,???????,?????,????????

???,“???????????”????????????????????????????????,???????????????,?????????,???????????????20??(?????????????)?????????????????????0.3%/???,20???????????????0.5%/??????????????????????????????????

??,????????“??????????????”?????????20???(??)????????????,??????20?,???????????,????????????????????????????????(???????) ????:?????????????