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?????,???14~15?????????????????????????????,??,????????????????????????????,18~20???,?????,?????

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