機器
activity
architecture
black
blue sky
building
capability
city
concrete
construct
construction
crane
create
derrick
development
dusk
equipment
foundation
frame
growth
hat
high
industrial
industry
infrastructure
labor
people
pillar
plans
profession
project
properties
scaffold
scenic
shadow
site
steel
strength
structure
technology
tower
unfinished
urban
walls
white
work
worke