backwards and forwards造句

These products use the existing eye muscles to change the shape of the lens and move it backwards and forwards in the eye during focusing.

The paging UI allows you to navigate backwards and forwards through displayed data, displaying a fixed number of records at a time.

Oh no! I rolled backwards and forwards on the carpet to make the horror of it seem greater, and in the end I saw the wall heave over me and the pictures hung straight out on their wires.