x No Plagiarism!pJE3jDJ8ju6BLj0r8b9Uposted on PENANA 1,000,000粒沙子是一個丘,615Please respect copyright.PENANAupadphLz5I一個丘減掉一粒沙子還是一個丘 ,615Please respect copyright.PENANAdcZ0fy66Dw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?3.129.209.135ns3.129.209.135da2