crusty/ˈkrʌs.ti/名词脏皮士(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)Lots of crusties came into town for the festival.许多脏皮士来到镇上欢庆节日。/ˈkrʌs.ti/形容词有硬壳的fresh, crusty bread新鲜的脆皮面包(尤指老年人)易怒的,爱抱怨的,脾气坏的a crusty old man坏脾气的老头想跟读,去练习