Operating for a relatively extended period of time.(adjective)
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Use "long-running" in a sentence
"The French regulator detailed what it called a long-running scheme that pushed up prices for consumers before finally falling apart when the group's interests diverged."
"Ginger White surfaced in bombshell fashion on Monday, telling an Atlanta TV station that she's "not proud" of what she described as long-running sexual shenanigans with the married GOP White House contender."
"The $500 million would fully fund the state's formula for distributing money to schools only for the 31 low-income districts known as the "Abbotts," referring to the long-running school funding lawsuit Abbott v."