It is profitless to continue arguing.继续争论是无益的。Revising the procedure was an entirely profitless exercise.对程序进行修改是徒劳无功的。
英英词典释义
Adjective
1. without profit or reward;
"let us have no part in profitless quarrels"- D.D.Eisenhower"How weary, flat, stale, and unprofitable / Seem to me all the uses of this world"- Shakespeare