英文關鍵字
action
activity
approximation
asphalt
asphaltn
blur
chance
city
clean
cleaner
cleaning
cleanliness
conceptual
cream
dessert
dirt
drop
drops
earth
environment
feet
food
gait
garbage
greens
ground
hands
heat
ice
man
melt
outdoors
pace
park
passerby
pick
picks
pollute
relaxation
removes
responsible
road
sandals
scavenger
shoes
sidewalk
street
summer
sunny
tasty
teenager
then
toes
trash
urban
walk
walking
wipe
wipes