crusty
adjective uk/ˈkrʌs.ti/ us/ˈkrʌs.ti/
(HARD LAYER)
有硬壳的
having a hard outer layer
fresh, crusty bread 新鲜的脆皮面包
(EASILY ANNOYED)
（尤指老年人）易怒的，爱抱怨的，脾气坏的
(especially of older people) complaining and easily annoyed
a crusty old man 坏脾气的老头
crusty
noun [ C ] UK informal uk/ˈkrʌs.ti/ us/ˈkrʌs.ti/
脏皮士（指生活方式不同常人，衣衫褴褛、头发脏乱，没有固定工作和住所的年轻人）
a young person who does not live in a way that society considers normal, typically with untidy or dirty clothes and hair, and no regular job or permanent home
Lots of crusties came into town for the festival. 许多脏皮士来到镇上欢庆节日。