英文關鍵字
adult
back
biology
caucasian
chemistry
child
childhood
children
class
classroom
concept
discovery
education
elementary
equipment
experiment
female
girl
group
home
horizontal
indoor
knowledge
lab
laboratory
learn
learning
lesson
microscope
microscopes
people
person
primary
pupil
pupils
research
school
schoolboy
schoolgirl
schooling
science
scientific
scientist
student
study
studying
teacher
technology
teenager
test
tutor
using
woman
writing
young