x No Plagiarism!F4YellLdDP1sIpuSO2dZposted on PENANA 1,000,000粒沙子是一個丘,599Please respect copyright.PENANA80gl2gWkDd一個丘減掉一粒沙子還是一個丘 ,599Please respect copyright.PENANA0dSaubqpM3假如一直重複這清況的話(每次都減掉一粒沙子),到了最後會是一個丘等於一粒沙子嗎?3.146.65.73ns3.146.65.73da2