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  1. Oxford Dictionary

    blackboard

    • IPA[ˈblakbɔːd]

    英式

    • n.
      a large board with a smooth dark surface attached to a wall or supported on an easel and used by teachers in schools for writing on with chalk.

    • noun: blackboard, plural noun: blackboards

    • 更多解釋

    blackboard

    • IPA[ˈblakˌbôrd]

    美式

    • n.
      a large board with a smooth, typically dark, surface attached to a wall or supported on an ...

    Oxford American Dictionary