Ventilation includes both the exchangeofair to the outside as well as circulation of air within the building.
通风包括与室外空气交换和室内空气循环。
2
The rate ofexchange between indoor and outdoor air, which depends on the construction of the house, the ventilation habits of the inhabitants, and the sealing of Windows.
室内外空气的交换速度，这取决于房屋的构造、居住者的通风习惯和窗户的密封程度。
3
The heavy molecules don't create the same kind of heat exchange between panes that regular ambient air would, drastically improving each window's insulation value.