x No Plagiarism!XjeUpcT4u1dCE0U0B2xaposted 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 protection164PENANAtP3M8itImc 維尼 15.158.61.19ns 15.158.61.19da2