No Plagiarism!BQXrnAZl081efSFTinrhposted on PENANA 1,000,000粒沙子是一個丘,689Please respect copyright.PENANA05SwOgzPWX一個丘減掉一粒沙子還是一個丘 ,689Please respect copyright.PENANABtf5gnqmI4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