機器
backhoe
big
building
business
concrete
construction
contact
debris
demolition
destroy
destruction
devastation
development
dig
dirt
dredger
dust
earth
engineering
equipment
excavator
factory
ground
hall
heavy
hydraulic
industry
job
loader
mall
mover
person
power
project
protect
real
reconstruction
recycle
scoop
shopping
shoveling
site
technology
transport
truck
vehicle
work
workplace
yellow