black sand

短语

[地质][冶] 黑砂

词形变化

black sands 复数 black sands

释义与例句

n.
  1. 1.

    Basaltic sand of volcanic origin, frequently found associated with volcanic islands.

    可数 不可数 交通
  2. 2.

    Sand high in magnetite and other iron-rich ferrous minerals, frequently found associated with placer mining.

    可数 不可数 商务 采矿
  3. 3.

    Powdered emery.

    可数 不可数
  4. 4.

    Used other than figuratively or idiomatically: see black, sand.

    可数 不可数