???????????!???????? ?????????
??????,?????“??”,???????,???????????????,????????????????????????,???????????????“??????????”???
???,?????????????,????6~14?,??10???????????????????15???????????“??”??
???????????,???????????????????14????????20?,?????????,??????!???
???,???,??,?????????????10????
???,????????,????????????????????????????10??????,?????????????????2???????6~8???????????;?0?????????????,??10??????
???????????????????????????,?“??????????”??,?????
??????,????????????????????15??16???,???????,?????????????15~20????,??20?????????15?????9°C,16?????????????????17°C;???15??????11°C,16???????????????????17°C?
???????????????????,2????????,??“????”?
??15??17????????????????????,?????????????????,??,???????????????????,????????????????4~8?,?10??
????????,16???,????????,???????????????????????,??5°C???
17??????,??,??????????“???”?
??,????,??,????
?,????,???,??????????????,????,??????????????~
???????????????:?????????????