x No Plagiarism!0T2raT9GbwSWX7p0qoatposted on PENANA 1,000,000粒沙子是一個丘,642Please respect copyright.PENANAGBEKY3cicM一個丘減掉一粒沙子還是一個丘 ,642Please respect copyright.PENANAF3CfCqcl1o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?216.73.216.196ns216.73.216.196da2