- heating, ventilation and air conditioning(used to refer to a system that can heat or cool a building or allow fresh air to move around)
暖通空调:供暖,通风和空调(用于表示可以加热或冷却建筑物或允许新鲜空气移动的系统) a new, efficient HVAC system 一种新型高效的暖通空调系统
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