No Plagiarism!937Yl71886tVzI0INAnAposted on PENANA 1,000,000粒沙子是一個丘,687Please respect copyright.PENANAQkVJV5okSO一個丘減掉一粒沙子還是一個丘 ,687Please respect copyright.PENANAtV5tEqAld2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?216.73.216.208ns216.73.216.208da2