Level 3 · word 2,505 of 20,000
coal
/ˈkoʊl/
American
- n. 煤
- n. 木炭
- Definition
- n. a black rock burned as fuel
- n. charcoal
- Example
- The old factory used coal to power its machines.
- 这家老工厂用煤炭来驱动机器。
Word mapFuels