prolonged

a.持久的

projectile, projection, projection room, projectionist, projector, prolapse, prole, proletarian, proletariat, proletariat `pr4ule'te4ri4t], proliferate, proliferation, prolific, prolifically, prolix, prolixity, prologue, prologue (US also prolog), prolong, prolongation, prom, promenade, promenade concert, promenade deck, prominence, prominent, prominently, promiscuity, promiscuous, promiscuously, promise, promise oneself, promise to do, promising, promisingly, promissory, promissory note, promontary, promontory, promote,