機器
activity
architecture
background
build
building activity
built structure
construct
construction
construction frame
construction site
construction worker
crane
create
derrick
development
dusk
engineering
erect
estate
foundation
high
house
housing project
industrial
industry
infrastructure
iron
labor
material
metal
new
occupation
progress
project
properties
rise
safety
scaffolding
silhouette
site
steel
strength
structure
tower crane
unfinished
urban
worker
working