english: If you look at the x-axis of this graph, you'll see that what we commonly want to do -- which is keeping the outdoors out -- we accomplished that with mechanical ventilation.
non_english: Ukoliko pogledate X-osu ovog grafika, uočićete da mi uobičajano želimo da zadržimo spoljašnju sredinu izvan i to postižemo mehaničkim ventilacionim sistemom.