单词 protrusion 释义 protrusion|prtrun|[a. F. protrusion, ad. L. type *prtrsin-em, n. of action f. prtrd-re to protrude.]1. The action of protruding (in various senses of the vb.); the fact or condition of being protruded. †a. Thrusting forward or onwar...
单词 protrusion 释义 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...