機器
abstract
activity
asphalt
backhoe
ban
bitumen
block
bricklayer
builder
cement
clean
coating
cobbled
concrete
construction
demolish
demolition
equipment
excavating
ground
hand
heavy
house
industrial
industry
job
laying
man
metal
nature
old
pattern
pavement
paving
person
placing
repair
road
roadwork
sand
shovel
site
slab
stonework
tool
water
work
worker
yellow