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.
Ukoliko pogledate x-os ovog grafa, vidjeti ćete da ono što mi često radimo -- a to je da držimo vanjski svijet vani -- uspijeli smo to napraviti s mehaničkom ventilacijom.