| crust | |
| 级别 | 第5级 |
| 音标 | [ krʌst ] |
| 解释 | n.(一片)面包皮，硬外皮，外壳；地壳 |
| 英英释义 | a hard outer covering of something |
| 发音 |  |
| 例句 |
1. This article focuses on radiation present in the earth crust. 本文重点介绍源自地壳的辐射。 2. Earth quakes can result from stresses in the earth's crust. 地壳内的压力可能引起地震。 |
