A World of Tools 工具世界

It is a paintbrush.
An artist paints a picture with a paintbrush.
It is a rake.
A gardener sweeps leaves with a rake.
It is a hammer.
A carpenter knocks a nail with a hammer.
It is a stethoscope.
A doctor listens to the heartbeat with a stethoscope.
It is a microscope.
A scientist looks at tiny things with a microscope.