x No Plagiarism!USq80lmyuWttjAqXg7Nhposted on PENANA 1,000,000粒沙子是一個丘,616Please respect copyright.PENANAyQEKHmtrqO一個丘減掉一粒沙子還是一個丘 ,616Please respect copyright.PENANAUnEHwa1hrg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?3.135.240.57ns3.135.240.57da2