As with every powerful tool, it has the potential for good and bad.

"It is also a very powerful tool of economic development for both states."

It is a powerful tool for economic and social development.

How this powerful tool will be used is an open question.

It was a powerful tool for us in the past.

Technology can be a powerful tool when it comes to teaching and learning.

The child turns to one of the most powerful tools known to man: fire.

Of course society should have powerful tools to bring about freedom, security and justice, as the report states.

To know what a man or a woman thought, whatever they might say, was a powerful tool.