slaty [ˈsleti]

例句:

• The Stone that is Slaty...will split only lengthways or horizontally.
  来自S. P. Woodward
• A sudden gust of cool wind under the slaty sky, and rain drops will start patter - pattering.
  在灰沉沉的天底下, 忽而来一阵凉风,便息列索落地下起雨来了.
  
• A metamorphic rock intermediate between shale and slate , that does not possess true slaty cleavage.
  一种细颗粒的变质岩,由泥质岩受热形成.