The control rod adjusts the reaction of the nuclear reactor.

He tried to open the door using a crowbar.

In this picture, a red vertical line is drawn.

If you pull this horizontal line, the door will open.

He was swinging a baton around.

She bought a knitting needle for her new project.

He swung the Ruyi Jingu Bang and defeated the enemies.

A barred spiral galaxy can be said to be a work of art in the universe because of its beautiful shape.

He stirred the fireplace fire with a poker.