Ahịrịokwu nke mbụ: " Cannel coal " bụ brown to black oil shale. Nke abụọ: A na-esi n"ụgbọala a na-akpọ " Cannel coal " enweta mmanụ a na-akpọ " oil shale ". Ajụjụ: Ọ̀ bụ otu ihe ka ahịrịokwu nke mbụ na nke abụọ pụtara? Ee ma ọ bụ Ee e?
Ee e