英文關鍵字
man
playing
online
technology
insomnia
tired
restless
using
mobile
phone
late
bed
vertical
video
gaming
night
leisure
caucasian
people
person
adult
male
guy
bored
sleepless
entertainment
application
sleepy
fatigue
evening
dark
digital
app
gadget
internet
cellphone
smartphone
virtual
device
modern
electronic