boneblack / ˈboʊnˌblæk /

🎓大学词汇红黑色红黑红黑相间红黑色的

boneblack 的定义

n. 名词 noun
  1. a black, carbonaceous substance obtained by calcining bones in closed vessels, used as a black pigment, a decolorizing agent, etc.

更多boneblack例句

  1. While they may improve conditions somewhat, the only solution to such a problem is the use of the boneblack process.