英文關鍵字
agricultural
agriculture
big
black
blue
chemical
clearance
corn
country
countryside
crop
environment
equipment
farm
farmer
farming
fertilize
fertilizer
field
green
hdr
high
industry
insecticide
land
landscape
long
machine
machinery
parasites
pesticide
pesticides
prairie
propelled
ride
rural
safety
season
spray
sprayer
sprayers
spraying
tall
tire
toxic
tractor
work