x No Plagiarism!bQz7cWhdMvmad0DilIPPposted 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 protection227PENANAdtrgilVORV 維尼18.227.228.218ns18.227.228.218da2