英文關鍵字
agriculture
agronomy
cereal
chopper
combine
crop
cultivated
cutter
cutting
driving
dust
ear
equipment
farm
farming
farmland
field
follow
food
gathering
grain
harvest
harvester
harvesting
industry
knife
machine
machinery
mature
plantation
process
rotary
seed
sieve
spin
straw
summer
thresher
threshing
west
wheat
work