英文關鍵字
agricultural
agriculture
agronomy
bug
chemical
close
copter
countryscape
cultivation
day
drone
ecology
environment
environmental
equipment
farm
farmer
fertilizer
field
flycam
green
growth
industry
insecticide
landscape
machine
machinery
modern
move
nature
pesticide
plant
quadrocopter
rural
season
seasonal
spray
sprayer
sprinkle
summer
sunny
tractor
trailer
vertical
view
wheat
work