機器
浜辺
activity
artificial
blade
boy
build
bulldozer
business
cabin
car
child
childhood
construction
crawler
dig
digger
digging
dirt
dirty
dredge
dredger
driver
earth
equipment
excavator
fun
game
garbage
heap
heavy
industrial
kid
mine
model
ocean
pile edge
play
power
push
rubble
sand
scale
scoop
sea
shovel
steel
toy
tractor
wheel