... pencil carbon paper 铅笔书写复写纸 pencil carbon paper 铅笔书写复写纸 pencil master paper 珂锣版印刷原纸 ...
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pencil l carbon paper 铅笔书写复写纸
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When you trace a pencil on a piece of paper, these layers are cleaved, leaving thin layers of these carbon sheets.
当你用铅笔在纸上划写的时候，这些碳原子薄层裂开并留在纸上。
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Volume I, 1920, was produced laboriously with pencil and carbon paper.
第一卷于1920年出版，那是我用铅笔和复写纸辛辛苦苦地搞定的。
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