Our internal fire and spark is the only way to eradicate it.

我们内心的火焰和火花是根除它的唯一方法。

The internal fires had not yet forced their way through.

内部的火势还没有蔓延开来。

It was of the bigness of a duck's egg; beautifully shaped, and without a flaw; and as the sun shone upon it, it gave forth a lustre like that of electricity, and seemed to burn in his hand with a thousand internal fires.

它有鸭蛋那么大；造型优美，无瑕疵；阳光照在上面，它发出电光般的光泽，仿佛在他的手中燃烧着万千内火。