英文關鍵字
adult
caucasian
class
classmates
classroom
college
communication
discussion
female
friends
girls
indoors
knowledge
lesson
lessons
lifestyle
people
person
pupil
school
sitting
student
studying
talk
teenager
university
women
young
youth
英文關鍵字
adult
caucasian
class
classmates
classroom
college
communication
discussion
female
friends
girls
indoors
knowledge
lesson
lessons
lifestyle
people
person
pupil
school
sitting
student
studying
talk
teenager
university
women
young
youth