n. 1.面包皮 (opp. crumb)；干面包片；生活口粮，糊口之资。 2.外皮，壳；〔美国〕雪壳；【地质学；地理学】地壳；【动物；动物学】甲壳；【医学】痂；(酒等的)浮渣；水垢。 3.(事物的)皮相，外表，表面。 4.〔美俚〕老面皮，厚颜无耻，没礼貌；(人的)脑壳。 短语和例子 crust movement 地壳移动。 earn one's crust 挣钱糊口。 have a crust 〔美俚〕脸皮太厚；太大胆，太鲁莽，太冒失。 the upper crust 〔古、俚〕上层社会。 vt.,vi. 用外皮覆盖；结成硬皮；生痂儿。 The snow has crusted over. 雪在地上结成冰壳。
the trait of being rude and impertinent; inclined to take liberties 同义词：gall, impertinence, impudence, insolence, cheekiness, freshness,
the outer layer of the Earth 同义词：Earth''s crust,
a hard outer layer that covers something 同义词：incrustation, encrustation,
form a crust or form into a crust; "The bread crusted in the oven"
例句与用法
1.
Look , the paste has crusted on your sleeve . 瞧，浆糊都嘎巴在你袖子上了。
2.
Strains in the earth's crust seem to pile up . 地壳的应力似乎一直在积聚着。
3.
There was salt crusted everywhere . 到处都结着盐皮。
4.
The snow has crusted over . 雪在地上结成冰壳。
5.
Sodium is the sixth most abundant element in the earth's crust . 钠是地表中含量第6丰富的元素。
6.
They must have appeared first as crusts and clinkers . 它们最初必然象面包的外皮和熔炉里的渣块。
7.
Stratigraphy studies the sequence of the rocks in the earth's crust . 地层学研究地壳中岩石的层序。
8.
The crust seals the soil and prevents the evaporation of water . 这层表皮把土壤封闭，防止水份蒸发。
9.
They cut straight downwards through the hard, brush covered crust . 他们穿透长着灌木的坚实的硬土一直向下掘。
10.
Repeat these steps until the suture line is free of blood and crusts . 重复以上操作直到缝合处无血和硬痂为止。
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