?? ????????? ???????????
![](http://n.sinaimg.cn/news/transform/200/w600h400/20190211/kFw1-hswimzx8322474.jpg)
????:1???????:?????????
2?????????????
3???????????
4?????
5????????????
?????????????,???,?????????????????????,????????
?2??????,??????????????,???????????????????????????????,2???
???????????????,????,??,?,???,????????
??,????????????14~15????,??,?????????????????????????????,18~20???????,?????????????????,???
??????????,?????????,???????
????,???????????????
??????,????????,??????????????15~16???????????????
????,?????????????????????15????,??15°C,??????????5~8?,??????????????
????????,?????17?????????16?,???,??????7~8???????
???????????????????,15???????,?????,?????16???????,????,??????????15?????,???????????????20???????????
???????????,?????????????????4??????????10°C???????????,16??????????17°C;??????15???????????26??,???????????10???????,?????
?????????15???????????????????,????????????,???
?????????????,?????????????????????????????:?????????
??,??????????,??????????????,?????????????;??????,??????,???????
???????,???,???????,?????????????????,???????????????,???,????????????,????????????????
??????????:?????????