英文關鍵字
aerial
agricultural
agriculture
brown
chisel
collect
collector
crop
cultivate
cultivating
cultivation
digger
digging
dirt
dust
earth
engine
equipment
exterior
farm
farming
farmland
field
food
furrow
groundwork
harvest
industrial
industry
laborers
land
machinery
modern
moldboard
organic
overturning
plough
plow
plowed
plowing
plowshare
potato
preparation
rural
soil
tillage
tractor