English Dictionary

unburn

verb

(intransitive) To undergo the process of burning in reverse.

The firefighters were able to unburn the building before it collapsed.

意味（1）

(intransitive) To undergo the process of burning in reverse.

Similarly, you cannot 'unstir' the sugar from a cup of coffee once it has been dissolved, and you never see a pile of ash in the fireplace 'unburn' to become a log of wood again.