英文關鍵字
agricultural
agriculture
auger
bins
combine
conveyor
corn
country
crop
dryer
equipment
farm
farming
farmland
field
food
grain
growth
harvest
harvester
harvesting
industry
machine
machinery
metal
motion
nobody
plant
pouring
rural
season
seed
summer
sun
trailer
transport
transportation
unloading
vehicle
wheat
working
yellow