burnt symptom

例句：

1. 1. The fire was so intense that the wood was burnt to ashes.
   火势太猛，木头被烧成了灰烬。
2. 2. The old book had been burnt by the flames of the fire.
   那本旧书被火焰烧成了灰烬。
3. 3. The charred remains of the ancient city are still visible from a distance.
   古代城市的焦黑残骸仍然可以从远处看到。