crust
/krʌst; krʌst/ n
1
(a) [C, U] hard outer surface of a loaf of bread; pastry covering of a pie, tart, etc 面包皮; 糕饼等的酥皮
a white loaf with a crisp brown crust 有焦皮的白面包
Cut the crusts off when you make sandwiches. 做三明治时要把焦皮切掉. =>illus at bread 见bread之插图.
(b) [C] (esp rhet 尤作修辞) slice of bread, esp a thin dry one 面包片（尤指薄而乾的）
(fig 比喻) He'd share his last crust with you, ie is very unselfish. 他就是剩下最後一片面包也会与你分享.
2 [C, U] hard surface 硬的表面
a thin crust of ice, frozen snow, etc 薄薄的一层冰、 冻结的雪等
the Earth's crust, ie the part nearest its surface 地壳.
3 [C, U] hard deposit on the inside of a bottle of wine, esp old port （葡萄酒的）沉淀物.
4 (idm 习语) the upper crust => upper. crust, v (phr v) crust over become covered with a crust 表层变硬
The surface of the liquid gradually crusted over. 液体表面渐渐地结了一层皮. crusted adj
1 [usu pred 通常作表语]
~ (with sth) having a hardened covering; encrusted 有硬壳; 结壳
walls crusted with dirt 积满污垢的墙.
2 [usu attrib 通常作定语]
(of port) blended from different vintages and matured in bottles （指红葡萄酒）由不同年份的葡萄酒混合装瓶使之醇和.