英文關鍵字
adolescent
adult
amazed
app
backpack
boy
casual
cellular
child
communication
conversation
grass
green
happy
interest
internet
lifestyle
male
meadow
message
mobile
modern
outdoor
park
phone
play
portrait
pupil
read
schoolbag
schoolboy
schoolchild
shirt
smart
smartphone
sms
student
summer
surprised
talk
technology
teen
teenager
telephone
text
texting
touchpad
touchscreen
wireless
youth