has been concealing
-ha estado ocultando
Presente perfecto progresivo para el sujetohe/shedel verboconceal.

conceal

It is soon apparent to Alex not only that his client's case is weak, but also that he has been concealing material parts of the evidence.
Pronto le queda claro a Alex no solo que su cliente tiene la caja vacía, sino que también ha estado ocultando pruebas materiales del caso.
During all the years it has been in power, the government has been concealing the supply agreements with Russia and has not been doing anything to diversify our country's supply sources.
Durante todos los años que lleva en el poder, el Gobierno ha ocultado los acuerdos de suministro con Rusia y no ha hecho nada para diversificar las fuentes de suministro de nuestro país.
Palabra del día
el guion