英文關鍵字
abstract
airport
architecture
ascent
automatic
background
close
design
details
down
downward
electric
elevator
empty
escalator
floor
isolated
journey
life
light
metal
modern
motion
motorized
move
moving
people
perspective
platform
railing
reflection
rise
shiny
stainless
stair
staircase
stairway
steel
step
steps
transparent
transport
transportation
travel
upstair
upward
urban
vertical
way