Do you know which kind of house is energy-saving, environmental protecting and low costing?
您知道什么样的房屋是绿色、节能、环保又省钱的吗?
This problem is researched deeply by information centre of Harbin environmental protecting bureau.
哈尔滨市环保局信息中心将此作为课题深入研究。
The power has the traits of fast charge, long life, free maintenance, environmental protecting and so on.
该电池具有充电快、寿命长、免维护并且环保等特点。
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