The rule is now used internationally as an aid to free discussion.

Thus, the computer is used as a helpful aid to enhance the real scene.

Music can also be used as an effective aid to evangelism.

Mostly, I use the rhythm of exercise as an aid to thinking.

There he was trained to use sound as a diagnostic aid.

Instead of using capital simply as an aid to the industry, Morgan identified a new business opportunity.

Learning to write it directly would especially require effort, unless computer software is used as an aid.

She used the same moisture as an aid to her hands on his back.

The children, of course, use their fingers as a counting aid.

Its expression is used as a prognostic aid in these cases.