A slate pencil is a type of writing tool traditionally used for writing on slate boards, which were common in schools before the widespread use of paper. The pencil has a soft, grayish lead, which is suitable for easily writing on smooth, dark surfaces like slate. The writing can be erased by wiping the slate with a damp cloth, making it reusable. Slate pencils are similar in appearance to regular pencils but are typically designed to create marks that can be wiped off easily. They were commonly used in early education settings and are now mainly of historical interest.

“slate pencil”的英语定义和含义

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