回複：1.5 star star- finding road

來源: calligraphy 於 2010-03-13 16:41:41 [] [舊帖] [給我悄悄話] 閱讀數 : (101 bytes)

If you only have a compass, you can not run on a circle.

I think you can only a straight line.

請您先登陸，再發跟帖！