Sentence examples for once useful from inspiring English sources

Once useful enzymes are discovered and improved, they can be produced in commercial quantities using either naturally occurring or genetically enhanced microbes (GEMs).

Yet this exaggerated generalization was once useful, especially for African-Americans re-embracing a heritage that had long been maligned.

And they have to be ruthless, tossing overboard friends who were once useful and no longer are.

The background of the story is the C.I.A.'s attempt to kill a once useful African dictator who is trying to blackmail it.

It's time to retire this once useful, now menacing plant and make New York a model for a clean energy future.

Just as liberalization was once useful for the Mubarak regime's image, rolling back the reforms could now help an Islamist government put its imprint on a new era, bolstering the country's widespread social conservatism.

Innovative ways of lowering transaction cost spread throughout a community, and failures (including once-useful but now obsolete innovations) are discarded.

Trump is the once-useful barbarian the Republican establishment cannot control.

Speaking of once-useful cautionary tales, Amalía has a singing plastic picnic basket (hers is a world in which inanimate objects often break into song) which croons a version of what I knew as "I'm bringing home a baby bumblebee, won't my mommy be so proud of me?

Since World War II, an inexorable pattern of resistance has rendered once-useful malaria treatments, such as chloroquine, sulfadoxine/pyrimethamine and mefloquine, ineffective in large parts of the malaria-endemic world.

Ms. Umaru, a retired schoolteacher who joined WOTCLEF six years ago, thinks the once-useful system of fostering children through extended family – in which aunts, uncles, cousins or even older siblings help raise children – has evolved into a means of exploitation.