英文關鍵字
attractive
beautiful
biology
boy
chemistry
child
childhood
children
class
classroom
coat
college
discovery
education
elementary
equipment
experiment
female
friends
girl
group
indoors
knowledge
lab
laboratory
learn
learning
lesson
microscope
people
person
primary
research
school
schoolboy
science
scientific
scientist
student
study
studying
teacher
technology
teenager
test
together
woman
young