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(原(yuán )子(zǐ )笔(bǐ )，原(yuán )子(zǐ )笔(bǐ ))

即(jí )圆(yuán )珠(zhū )笔(bǐ )。用(yòng )油(yóu )墨(mò )书(shū )写(xiě )的(de )一(yī )种(zhǒng )笔(bǐ )，笔(bǐ )芯(xīn )裡(lǐ )装(zhuāng )有(yǒu )油(yóu )墨(mò )，笔(bǐ )尖(jiān )是(shì )个(gè )小(xiǎo )钢(gāng )珠(zhū )，油(yóu )墨(mò )由(yóu )钢(gāng )珠(zhū )四(sì )周(zhōu )渗(shèn )下(xià )。

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