英文關鍵字
academic
auditorium
bench
blackboard
blind
business
change
class
classroom
college
conference
convention
dark
desk
education
empty
furniture
hall
indoor
inside
interior
jalousie
learn
lecture
levels
light
meeting
microphone
modern
presentation
projector
room
row
school
screen
seat
seminar
speaker
stair
study
switch
theater
training
tribune
turn
university
wooden