英文關鍵字
1080p
1920x1080
adult
book
caucasian
concept
definition
education
footage
hdv
hidef
high
hold
holding
home
indoors
information
inside
knowledge
learning
library
lifestyle
male
man
notes
novel
paper
pen
person
printed
read
reading
sitting
story
study
studying
table
take
taking
university
wooden
write
writing
young