charcoal crayon

charcoal crayon [ˈtʃɑ:kəul ˈkreiən]  [ˈtʃɑrˌkol ˈkreˌɑn] 

charcoal crayon 基本解释
炭笔;
charcoal crayon 网络解释

charcoal crayon的解释

1. 炭笔:bog muck 泥炭 | charcoal crayon 炭笔 | black carbon 炭黑