機器
activity
architecture
background
bridge
building
built
business
cable
city
concrete
construction
crane
design
development
engineering
equipment
erect
exterior
factory
frame
growth
high
house
housing
industrial
industry
iron
job
modern
new
occupation
office
power
project
silhouette
site
sky
skyline
skyscraper
steel
structure
tall
technology
tower
urban
work
worker