英文關鍵字
afternoon
asphalt
auto
autumn
background
black
car
city
clean
concrete
country
cross
crosswalk
day
empty
gray
highway
line
mark
outdoor
outside
path
pattern
pavement
pedestrian
road
row
safety
sidewalk
sign
simple
street
stripe
surface
symbol
town
traffic
transport
urban
walk
walkway
warning
way
white
zebra