英文關鍵字
adult
air
allergens
allergies
caucasian
ceiling
central
circulation
conditioning
cooling
duct
examining
furnace
gray
grid
guy
health
healthy
heating
home
house
hvac
inside
inspecting
interior
into
looking
maintenance
male
man
mature
metal
one
outflow
painted
peering
person
register
silver
upper
vent
ventilation
wall
white
worker