英文關鍵字
adult
asleep
black
book
bored
boy
caucasian
college
desk
education
exhausted
fatigue
green
hand
hard
head
homework
house
isolated
knowledge
learn
library
lifestyle
male
man
men
paper
pen
people
person
pupil
read
school
sleep
sleepy
stack
stress
struggle
student
study
studying
table
teen
teenager
tired
unhappy
university
white
work
young