protrusion

n (a) [U] protruding 伸出; 突出: Thumb-sucking can cause protrusion of the teeth. 经常吮吸拇指能使牙齿向外突出. (b) [C] thing that protrudes 伸出物; 突出物; 隆起物: rocky protrusions on the surface of the cliff 悬崖表面突出的岩石.

protege (fem 阴性作 protegee), protein, protein-rich, protest, Protestant, Protestantism, protestation, protester, protestingly, protocol, proton, protoplasm, prototype, protozoan, protozoon (also protozoan), protract, protracted, protraction, protractor, protrude, protrusive, protuberance, protuberant, proud, proudly, Prov, provable, provably, prove, proven, provenance, provender, proverb, proverbial, proverbially, provide, provide for, provide somebody with, provide sth.for sb., provided,