消防员花了三个小时才扑灭那个纵火犯引发的火灾。

Firefighters took three hours to put out the fire started by the arsonist.

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Firefighters took three hours to put out the fire started by the arsonist.

arsonist 是由名词 arson(纵火罪)加上后缀 -ist(表示"从事某种行为的人")构成的名词,指"故意放火的人",即"纵火犯"。

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