english: We spend an extraordinary amount of time in buildings that are extremely controlled environments, like this building here -- environments that have mechanical ventilation systems that include filtering, heating and air conditioning.
non_english: Mi provodimo zavidljiv procenat našeg vremena u zgradama koje su visoko kotrolisane sredine, kao ova zgrada u kojoj smo sada sredine koje imaju mehanički ventilacioni sistem koji uključuje filtriranje vazduha, grejanje i klima uređaje.