英文關鍵字
across
active
adult
asphalt
business
busy
city
commuters
cross
crosswalk
crowd
crowded
day
daytime
downtown
feet
gray
group
hectic
intersection
landmark
leg
life
male
men
modern
motion
move
movement
outdoor
overpopulation
pedestrian
people
person
population
road
rush
shoes
sidewalk
step
street
striped
traffic
travel
urban
walk
woman
zebra