be economical

In response to questions about why it retained control of the adjuvant, GSK said it was complicated to make, would not be economical to produce in more than one place, and was a very important component in many of the company's vaccines, so it wasn't willing to share the know-how.

But since winning the auction, Vattenfall and others have warned that costs have increased far too fast for these projects to be economical anymore.

Treasury yield curve as a result, since it would no longer be economical.

Still, he said farmers have had to be economical about how they use what amounts to just a little over half of a full allotment.

It’s designed to be economical on energy use and help reduce waste.