英文關鍵字
101
basic
class
classes
classroom
classrooms
college
course
courses
discourse
educate
education
educational
elementary
grade
instruct
instruction
introduction
laws
lecture
lectures
motion
newton
physic
physical
physics
practice
preparation
presentation
pupil
remedial
school
schooling
science
student
teacher
teaching
train
training
tutor
type
typewriter
typing
university
velocity