英文關鍵字
architecture
automatic
building
business
businessman
button
call
caucasian
center
claustrophobia
click
control
device
doorway
down
electronics
elevator
equipment
finger
forefinger
going
hand
hotel
house
icon
key
level
lift
light
machine
metal
modern
moving
number
office
panel
people
person
press
push
quick
safety
service
silver
steel
technology
touching
transport
transportation
waiting
woman