英文關鍵字
20s
adult
area
autumn
backpack
books
campus
casual
caucasian
cheerful
city
college
going
guy
happy
headphones
hipster
jeans
man
men
millennials
motion
notebook
one
outdoor
outdoors
park
people
side
slow
smiling
street
stroll
student
study
summer
sunlight
sunny
sunshine
teenager
tree
tshirt
univercity
university
walking
walks
young
youth
youthful