機器
african
automatic
black
border
building
business
button
call
conceptual
control
door
down
elevator
finger
floor
gate
going
hand
high
hotel
human
indoors
inside
level
lift
male
metal
modern
moving
number
office
one
open
operating
panel
people
press
pressing
push
pushing
silver
steel
technology
transport
transportation
up
wait
waiting