英文關鍵字
adult
alone
bearded
browse
building
cell
cellphone
cellular
chat
city
click
communication
connect
contact
conversation
day
device
digital
display
finding
free
gadget
game
gesture
handrails
leaning
looking
male
man
messages
net
outdoors
phone
reading
small
smart
smartphone
standing
summer
swipe
tapping
technology
telephone
thumbs
touch
type
using
wifi
young