• Sign in
  • Register your plurk account for free
趣學數學 hfimath
Jul 26, 2023 03:57PM
https://images.plurk.com/4sbYJTArwESMXIPKR1hRuO.png
當坐標原點不在地心

出處：Facebook
  • © 2008-2024 Plurk
  • About
  • Brand Assets
  • Terms
  • Privacy
  • Content Policy
  • FAQ
  • Contact Us