英文關鍵字
abstract
accelerate
airport
background
baggage
business
busy
city
corridor
crowd
departure
electric
escalator
escalators
exit
fast
flight
gate
inside
journey
life
loop
mall
metro
modern
motion
office
people
person
public
shopping
speed
stairway
station
steps
subway
suitcase
technology
terminal
time
train
transport
transportation
travel
underground
urban
walking
way
work