crust [krʌst]
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基本释义
n.(一片)面包皮,硬外皮,外壳;地壳
英英释义
a hard outer covering of something
参考例句
This article focuses on radiation present in the earth crust. 本文重点介绍源自地壳的辐射。
Earth quakes can result from stresses in the earth's crust. 地壳内的压力可能引起地震。
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