突出部的用法和樣例：
例句
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突緣，凸出部一件大物件上的突出部分，其有利於提供摩擦力，比如在輪胎上或鞋釘上
A projecting part of a larger piece that helps to provide traction, as on a tire or the sole of a boot. -
心耳耳朵的外部突出部分
The outer projecting portion of the ear. -
突出部位支撐或位於突出部位上面的：
Supported by or lying over something that projects. -
前端的突出部分向前突出的前端，比如滑雪板的前端
A projecting forward part, such as the front end of a ski.
