crust [krʌst]以下由轻松背单词网站提供
单词级别第5级基本释义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。 推荐阅读 |