機器
agriculture
background
backhoe
brown
canal
clay
construction
country
deep
demolition
dig
digger
digging
dirt
ditch
ditcher
double
drainage
earth
equipment
excavating machine
excavation
excavator
field
flood
grab
ground
heap
heavy
irrigation
large
mechanical
mountain
mover
old
outdoor
powerful
sand
soil
spreading
summer
technology
tracker
tractor
trench
trencher
unearth
village
yellow