But literal would essential mean - community which could produce/emit 5 different sounds.

For many, the play became an essential means of understanding a "vanished time" and one version of it.

To them, sign language is an essential means of communication, so I am pleased that this component has been included in the present report.

The Pact constitutes an essential means of implementing that policy.

It should be pointed out that vaccines are an essential means of combating tuberculosis, together with better testing.

European agriculture needs this technology as an essential means of improving its technical proficiency and the effects on the environment.

That arrangement is an essential means of ensuring a stable transition.

It was still an essential means of maintaining Imperial communications.

Mammoths did not sweat, and using frost or snow like this was an essential means of keeping cool.

Prior to modern times agriculture was the essential means of progress and survival for the Havasupai.