機器
agricultural
agriculture
agronomy
black
combine
cultivation
diesel
driving
effort
engine
equipment
farm
farmer
farming
fertilizer
frozen
gears
ground
growing
hard
harvest
harvesting
horsepower
land
machinery
modern
mud
nature
no people
outdoor
power
powerful
production
rubber
snow
soil
stands
strength
tire
track
traction
tractor
trailer
tread
tyre
wheel
work
yellow