The work of buildings energy efficiency has come into the second stage, and hot summer and cold winter region becomes the keystone.
我国的建筑节能工作已经进入第二阶段，夏热冬冷地区成为节能工作的重点。
The work of buildings energy efficiency has come into the second stage, and hot summer and cold winter region becomes the keystone.
我国的建筑节能工作已经进入第二阶段，夏热冬冷地区成为节能工作的重点。
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