機器
build
builder
building
cement
concrete
construction
demolition
destroy
dirt
dismantle
drilling
dust
equipment
fraction
gravel
ground
hammer
heap
heavy
industrial
industry
iron
jack
jackhammer
labor
laborer
man
metal
outdoor
people
person
pile
pneumatic
power
removal
remove
renovation
repair
road
rock
safety
site
technology
tool
using
work
worker
workman