greywacke ['greɪˌwæk]

例句:

• The sedimentary members are largely turbidites of greywacke facies.
  沉积岩的组成大部分为杂砂岩相的浊积岩.
  
• The sediments are detrital and largely of greywacke facies.
  沉积岩为碎屑质,大部分属于杂质砂岩相.
  
• This product has the quality of natural greywacke and lasting long property.
  它具有天然石材质硬、久、重量感的特征,而且富质朴之美,其强烈的表面质感,带有微妙明暗变化的朴素自然色彩,韵味独特.
  
• Co-regency Statue of Tuthmosis III in green greywacke stone, discovered in Karnak temple's hidden statue cache.
  来自BBC