機器
24
activity
automobile
beam
blue
boom
building
car
carriage
cement
concrete
construction
crane
cranes
dangerous
dark
development
equipment
ground
hydraulic
industry
lifter
lifting
light
loader
machinery
mobile
night
overhang
pour
pouring
powerful
pump
rope
safety
shift
site
sky
structure
swinging
telescopic
top
truck
vehicle
work
worker