crust

crust
noun

the tough outer part of a loaf of bread
面包皮
a sandwich with the crusts cut off.
切掉外皮的三明治。
[mass noun]I tore off several pieces of crust from the loaf.
我从面包上撕下了几块皮。
■a hard, dry scrap of bread
干面包片
a kindly old woman might give her a crust.
慈祥的老太太可能会给她一片干面包。
■(informal)a living or livelihood
(非正式)生活；生计
I've been earning a crust wherever I can.
我一直四处谋生。
■a layer of pastry covering a pie
馅饼皮
■a hardened layer, coating, or deposit on the surface of something, especially something soft
（尤指柔软物体的）硬外皮，外壳；雪壳
a crust of snow.
积雪的表层。
■the outermost layer of rock of which a planet consists, especially the part of the earth above the mantle
（尤指地球等星球的）外壳
the earth's crust.
地壳。
[mass noun]at the mid-ocean ridge new crust is formed.
海洋中部的脊岭上形成了新的外壳层。
■a deposit of tartrates and other substances formed in wine aged in the bottle, especially port
（尤指波尔图葡萄酒在瓶中形成的）酸式酒石酸钾沉淀

verb

[no obj.]form into a hard outer layer
在…上结硬皮（或痂）
the blisters eventually crust over.
水疱终于起痂了。
■[with obj.]cover with a hard outer layer
以硬壳覆盖
the burns crusted his cheek.
络腮胡子遮住了他的脸颊。

派生
crustal
adjective

［限用于名词表地质意义时］

语源

Middle English: from Old French crouste, from Latin crusta 'rind, shell, crust'

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