gray.wacke
n.（名词）Any of various dark gray sandstones that contain shale.杂砂岩：任何含有页岩的多种黑灰色砂岩之一
来源：Partial translation of German Grauwacke 德语 Grauwacke的部分翻译 grau [gray] grau [灰色的] Wacke [rock] from Middle High German from Old High German waggo [boulder] * see wegh- Wacke [岩石] 源自 中古高地德语 源自 古高地德语 waggo [卵石] *参见 wegh-
