機器
action
activity
architecture
asphalt
blade
block
breaker
bricklayer
builder
cement
circle
circular
concrete
construction
curb
cut
cutter
cutter machine
danger
dangerous
device
diamond
dirty
disc
electric
electrical
equipment
granite
grinder
hand
handle
hard
industrial
industry
instrument
material
power
professional
protection
repairs
rock
rotation
sawing
stone
surface
tile
tool
work
worker