| 词汇 | black coal |
| 释义 | Definition of black coal in English:black coalnoun blak ˈkəʊl
OriginEarly 16th century (in an earlier sense). From black + coal. Definition of black coal in US English:black coalnounblak ˈkəʊl
OriginEarly 16th century (in an earlier sense). From black + coal. |
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