?? ?????????????
![](https://image.chezhanri.com/2019/1113/9ae8cb1c9a405623c58439bf59a0d37d.jpg)
????:1??????????:????
2??????????????
3?????????
4???????????app
5???????150
??????????????6??????19?? (??? ???)??,?????????????????????????????????????????????
19?,???????3.46????(????,?????????????????)??,????
??,???????????????????????????????(?????????????????)2.13??????????,????,??;????????????????????????????????????????????(??)0.69????????,?????????????,??,???????????????????,?;???????????0.64????,?,??????????????????????
??,???????????????4.43??????????????????,?????
????????????????????,???????4.43?????????,??????????????????????????????????????7??,????????????????????????????????????,????????????????,????,????(??) ????:???