x No Plagiarism!KYDBV23Xfc83KoU9fgD1posted on PENANA 原子筆的筆芯放在水下,筆尖會自動朝下,並且整支筆芯會垂直於地面。8964 copyright protection89PENANApEb07teSOz 維尼 172.70.100.85ns 172.70.100.85da2