英文關鍵字
above
activity
aerial
agriculture
background
backgrounds
boundary
building
business
city
concrete
construct
construction
create
digger
dusk
engineering
equipment
factory
flight
foundation
heavy
housing
hydraulic
industrial
industry
job
labor
laborer
landscape
machine
material
new
occupation
outdoors
outside
road
safety
shovel
site
urban
vehicle
work