英文關鍵字
academic
adolescent
adult
african
afro
american
bad
black
book
bored
boredom
boring
caucasian
class
college
education
exam
exhausted
fatigue
friend
friendship
high
homework
indoor
late
learn
learning
lesson
man
night
notebook
people
school
sitting
sleep
sleepy
stack
stress
stressed
student
study
studying
team
teamwork
teen
teenager
tired
university
working
young