機器
activity
apartment
architecture
blue
boom
build
building
business
city
civil
construction
construction industry
construction site
crane
development
engineering
equipment
estate
frame
growth
heavy
high
hoisting
hook
industrial
industry
lift
lifting
machinery
metal
modern
outdoor
project
scaffolding
site
sky
steel
structure
tall
technology
tower
tower crane
transport
urban
work
yellow