由此可见，房子失火并不可能由燃烧的树木或灌木丛造成，而是由余烬引起。
It's a sign that what probably ignited the houses was not burning trees or chaparral; instead, the houses touched off one another as embers blew like wind-borne viruses.
他表示燃烧优质且余烬少的媒会更有效率。
It would be more efficient to burn better quality coal that left less ash, he said.
最好首先用引火柴和小枝子来给余烬加料，直到火再次燃烧起来。
Better to feed the embers first with kindling and small branches until the fire is roaring again.
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