x No Plagiarism!oNjgS6mo0x13Oa6KAeOIposted 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 protection162PENANAigwKfFJsba 維尼 15.158.61.19ns 15.158.61.19da2