英文關鍵字
action
agricultural
agriculture
agronomy
arable
autumn
brown
business
chisel
cultivate
cultivated
cultivating
cultivation
dirt
drive
dust
earth
engine
equipment
farm
field
furrow
harrow
land
machine
modern
moldboard
one
overturning
plough
ploughing
plow
plowed
plowing
plowshare
rake
red
rural
season
sky
soil
spring
tilling
tires
tractor
vehicle
wheat
wheel
working