This is probably the most essential tool in the kitchen.

Here are the top five essential tools for every cook.

These are essential tools for the big picture and the long run.

To them, computer technology isn't a threat to literature but an essential tool.

This has since become an essential tool in focus group research.

The problem is that your hands are also essential tools.

The family history is an essential tool for cancer risk assessment.

Fire was an essential tool in early human cultural development.

And today computer could be considered an important or even essential tool in translation.

Our unity has thus become an essential tool in the service of peace.