機器
agricultural
agriculture
agronomy
artificial
countryside
crops
cultivated
cycle
drop
ecology
ecosystem
environment
equipment
farm
farming
farmland
field
food
grains
green
grow
harvest
industrial
industry
irrigate
irrigation
land
machinery
nature
pipe
pivot
plant
plantation
rows
rural
season
sky
spray
sprayer
sprinkler
summer
sunflower
supply
system
technology
water
watering
wet
wheel