(1)燃え始める原因
(2)火を付ける
(3)set fire to
(4)cause to start burning
(5)set fire to; cause to start burning; "Lightening set fire to the forest"
さらに詳しく
(1)火を付ける
(2)燃え始める原因
(3)set fire to; cause to start burning; "Lightening set fire to the forest"