英文關鍵字
business
busy
city
crowd
crowded
customer
design
downward
elevator
escalator
fast
floor
girl
group
high
indoors
inside
interior
lift
mall
market
men
metro
modern
motion
move
movement
office
people
perspective
public
shop
shopping
singapore
speed
stair
staircase
stairs
stairway
station
steps
store
subway
terminal
transportation
urban
walk
walking
woman
young