Sentence examples for they are useful from inspiring English sources

When used in late PD they are useful at reducing the off periods.

Biomarkers are widely used in clinical practice and they are useful for monitoring the infectious process.

But they are useful illusions.

Hopefully, they are useful.

They are useful storytellers and are precisely balletic.

We judge them by whether they are useful.

They are useful for understanding, but they have their limits.

They are useful for support, but not for illumination".

They are useful and informative but have none of the qualities of the first diary.

"You have to know when they are useful and when they are not".

But privately, officials acknowledge that they are useful if they avoid civilians and hit militants.