英文關鍵字
man
male
student
meeting
book
teacher
girl
college
class
lecture
speech
training
boys
listeners
teaching
school
room
standing
lecturer
young
knowledge
studying
indoors
learning
information
seminar
course
session
explain
tutorial
listen
professor
education
professional
lesson
talk
discussion
workshop
people
presentation
18s
group
belarusian
belarusians