perseverance

n.坚持不懈，不屈不挠

perpetration, perpetrator, perpetual, perpetual motion, perpetually, perpetuate, perpetuation, perpetuity, perplex, perplexed, perplexedly, perplexing, perplexity, perquisite, perry, pers, persecute, persecution, persecutor, perseptive, persevere, persevering, perseveringly, Persia, Persian, Persian carpet (also Persian rug), Persian cat (also Persian), Persian lamb, persiflage, persimmon, persist, persist in, persistence, persistency, persistent, persistently, person, person-to-person call, persona, persona grata,