?????????!??????????? ????????

???,?????“??”,????????????????,???,????????,??“??”????????

??????????,????????????,??????????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??????,????????,??“?????”?

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