英文關鍵字
adult
aged
alarm
alert
alone
ambulance
attention
beard
blinker
bulb
button
circling
danger
elderly
emercom
emergency
face
flasher
glass
grandfather
gyration
hand
head
human
illumination
light
male
man
medical
motion
object
old
one
pensioner
person
police
rescue
retire
rotate
security
senior
service
sign
signal
spin
symbol
unfocused
urgency
warn
watch