英文關鍵字
agriculture
clay
countryside
direction
dirt
dirty
earth
environment
field
forest
grass
ground
land
landscape
line
mud
muddy
natural
nature
old
outdoor
path
pattern
plant
puddle
rain
road
rural
sand
scenery
soil
spring
swamps
terrain
texture
tire
trace
track
tracks
tractor
trail
transport
transportation
travel
truck
tyre
vehicle
way
wet
wheel