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chalk dust

/ˈtʃɔːk dʌst/

翻译: 粉笔书写或在地面画画时产生的细小的硫酸钙或碳酸钙颗粒。

1 个条目

phrase

/ˈtʃɔːk dʌst/B1informal
  • zh粉笔书写或在地面画画时产生的细小的硫酸钙或碳酸钙颗粒。

Fine particles of calcium sulfate or calcium carbonate that are produced when chalk is used for writing on a blackboard or for drawing on pavement.

  1. Fine powder from chalkA2formal

    The fine, powdery residue that is produced when chalk is used on a blackboard or other surface.

    zh粉笔灰

    • The teacher's hands were covered in chalk dust after the lesson.
    • A cloud of chalk dust rose from the blackboard as he erased the notes.
    • Chalk dust can sometimes cause allergies in sensitive individuals.