因自己不慎引发火灾，老人也是懊悔不以。
They accidentally cause a fire, the elderly also regret not to.
谨防小小烟头引发火灾。
引发火灾是轻型舰船对付大战舰的主要手段。
Setting fires is the main way lighter ships deal with big battleships.
引发火灾是轻型舰船对付大战舰的主要手段。
Setting fires is the main way lighter ships deal with big battleships.
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