| 释义 |
Gravel rock
基本例句
砾岩
We suggest to loosen the Danxia land-forms, out standing “red, sandstone, the gravel rock”, geology characteristic that limit “the crest is flat, steep slope, slow foothill” is then.建议把丹霞地貌物质基础形成的时限放宽，突出“红色、砂岩、砂砾岩”，限定“定平、身陡、麓缓”的地质特征即可。 |