预约成功
coal
过去式: coaled 过去分词: coaled 现在分词: coaling 第三人称单数: coals
n.煤;木炭
vt.烧成炭;供应煤
vi.加煤;装煤
例句：用作名词 (n.)
He put a shovel of coal on to the fire.
他往火炉里加了一铲煤。
The country is rich in oil and coal.
这个国家石油和煤的资源丰富。
用作及物动词 (vt.)
The workers were coaling the ship when he came back.
当他回来的时候,工人们正在给船加煤。
用作不及物动词 (vi.)
Ships coal at Gibraltar.
船在直布罗陀上煤。
The ship called at Boston to coal.
船停靠在波士顿加煤。
