protection

n.保护

prospective, prospector, prospectus, prosper, prosperity, prosperous, prosperously, prostate, prosthesis, prosthetic, prostitute, prostitution, prostrate, prosy, Prot, prot(o)-, protagonist, protean, protect, protect...from, protectionism, protectionist, protective, protective custody, protectively, protector, protectorate, protege (fem 阴性作 protegee), protein, protein-rich, protest, Protestant, Protestantism, protestation, protester, protestingly, protocol, proton, protoplasm, prototype,