英文關鍵字
aerial
agrarian
agriculture
bed
day
drone
experimental
farm
field
flight
fly
flying
grass
ground
growing
growth
hay
height
line
moscow
motion
nopeople
outdoor
outside
plants
propagation
quadcopter
quadrocopter
raising
rotate
row
russia
season
seed
seedbed
shoots
sprouts
stalk
summer
sunny
surface
top
topview
uav