英文關鍵字
1080p
academic
adult
bottle
canteen
caucasian
chair
cheerful
college
definition
drinking
education
female
happy
hd
high
highdef
knowledge
learn
learning
one
person
research
sitting
smiling
student
study
studying
university
water
woman
young
英文關鍵字
1080p
academic
adult
bottle
canteen
caucasian
chair
cheerful
college
definition
drinking
education
female
happy
hd
high
highdef
knowledge
learn
learning
one
person
research
sitting
smiling
student
study
studying
university
water
woman
young