死硬死硬的,何必呢?
加个挡风的,就大量减少了对流的热损失。。
你连楼主的题目都没仔细看,关键词:北方。。
死硬死硬的,何必呢?
加个挡风的,就大量减少了对流的热损失。。
你连楼主的题目都没仔细看,关键词:北方。。
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