????????? ???????????

???????,????????????,??????????????,???????

?????????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???????,???????????,????????

???,??????:????????

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