a retrofit for the heating system.
供热系统的改型翻新
a retrofit for the heating system.
供热系统的改型翻新
a retrofit kit for the homeowner; an energy-saving retrofit program; a large retrofit market.
房主的改建用的工具;节能改型方案;巨大的备翻新市场
motorists who retrofit catalysts to older cars.
给老车加催剂的车手。
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