Punks, soldiers, hippies, and Sumo wrestlers all have distinct hair styles, peculiar to their group.
朋克摇滚歌手、士兵、嬉皮士和相扑手都留着他们那个群体特有的独特发型。
《柯林斯英汉双解大词典》
2
Rather than recognizing characters, especially characters in a group, they have to put together hair color, body marks, and language to figure out who they're watching throw a punch.