??
?????,??????,??????????????????????????,????
?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???????,??????????????,??????????????????
????????????,???:?????????
?,?????????????,????????,???????;??????????,???????,?????
????,????,??,??,??????????????,??,????????????,?????????????
???????????:?????????????????
??????????????? ???????????????????????