機器
activity
asphalt
backgrounds
bitumen
black
building
concepts
condense
copy
day
engineering
equal
equipment
gray
heavy
horizontal
industrial
industry
iron
land
level
machinery
manual
material
new
nobody
occupation
outdoors
paver
place
plane construction
renewal
rink
road
roll
round
scale
shape
site
space
steel
street
surface
weight
works
yellow