过早点燃的燃料的爆炸或内燃机中未燃的废气的爆炸。
An explosion of prematurely ignited fuel or of unburned exhaust gases in an internal-combustion engine.
回火：过早点燃的燃料的爆炸或内燃机中未燃的废气的爆炸。
Backfire: an explosion of prematurely ignited fuel or of unburned exhaust gases in an internal-combustion engine.
这一平凡的壮举刺痛了每一个人的眼睛，也点燃了每一个人内心未燃的火种。
This extraordinary feat of every person's eyes, but also ignited the fire in the heart of each person.
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