英文關鍵字
black
boot
boots
chemicals
close
closeup
concept
dangerous
day
dirt
dirty
ditch
experiment
farm
filth
foot
gum
gumboots
kid
leg
man
materials
messy
mud
muddy
nature
oil
outdoors
outside
pollution
protection
puddle
rubber
shoe
shoes
showing
sludge
soil
sport
spot
spring
stain
step
summer
texture
toxic
trench
water
wet
worker