black ash

• 有机物燃烧后留下的深色粉末状残渣，常与火山喷发、森林火灾或工业过程有关。

A dark, powdery residue left after burning organic materials, often associated with volcanic eruptions, wildfires, or industrial processes.

1. Residue from burningB1formal

   The dark, powdery substance left after something has been burned completely.

   黑灰

   • The fire left a pile of black ash on the ground.
   • Black ash covered the area after the forest fire.
   • He cleaned the black ash from the fireplace.

2. Tree speciesB2formalamerican

   A type of ash tree (Fraxinus nigra) native to North America, known for its dark bark.

   树种

   • Black ash trees are commonly found in wetlands.
   • The wood of the black ash is used for making baskets.
   • Black ash is an important species for traditional crafts.