突出部分的用法和样例：
例句
-
突缘，凸出部一件大物件上的突出部分，其有利于提供摩擦力，比如在轮胎上或鞋钉上
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. -
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.
