英文關鍵字
agricultural
agriculture
arable
axles
beet
beetroot
beets
belt
cleaning
combine
compared
contemporary
conveyor
crop
cultivated
day
development
dirt
equipment
exterior
farm
farmer
field
food
harvest
harvester
heap
industry
land
large
lighting
loading
machine
machinery
mechanical
modern
natural
part
processing
ramp
refinery
root
rotational
speed
sugar
technology
tractor
transportation
truck
turnips
workhorse