英文關鍵字
awkward
blackboard
boy
chemical
chemist
chemistry
child
childhood
class
classroom
close
closeup
confused
dangerous
dirty
discovery
education
elementary
equipment
experiment
explosion
faulty
flask
formula
frightened
holding
invention
inventor
kid
lab
laboratory
lesson
liquid
male
playing
primary
research
sample
school
schoolboy
schoolkid
science
scientific
scientist
shock
surprised
test
tube
up