????:1???????:???????

2?????

3??????

4?????????

5?????app

??????????2??12?(????????????????????????)????????,????????

????????????????????????????? ???

????????????,?????“????????????????”???????,??(?????????????????????)???????????????????????????

?????????????,????(??????????)?,??“? ??”?????????????????????????????,?????2?????11???12???????????

?????? ???????

??,??????????????????????3.5????2.3?????????????,66??;??????????????????,?????????????????;?????????????????????????????????????,?????????????????

“??(???????)?????,????????????????,???”??,???????,??????,?,????????(??????????????????)

????????????:?????