機器
3d
3d printer
advanced
boy
caucasian
child
childhood
children
classroom
computer
constructing
creative
design
education
educational
electronics
engineering
equipment
girl
glasses
hobby
indoor
industry
innovation
junior
kid
learning
leisure
mechanics
mechanism
modern
occupation
plastic
print
printer
robot
robotics
school
science
spinner
studio
tech
technical
technology
together
workshop
young