Laws were created to prevent major changes to the town.

Does not want to prevent change but to manage it in the best way.

Before television, radio was by far the most effective way to prevent or promote social change.

But we should not allow them to prevent changes that would make us safer.

It should not be regarded simply as a means of preventing change'.

Section 6 prevented changes to the areas or status of local authorities.

This does not prevent changes to the referred object itself.

Leaving it on all the time prevents such sudden changes.

It would have been so if our diplomacy had tried to prevent changes in the neighboring countries.

Something within the human system is preventing change to a sustainable mode of behavior.