lrwxrwxrwx
1 21285 21285 23 Feb 5 2011 testing-proposed-updates -> wheezy-proposed-updates
drwxr-sr-x 5
21285 21285 21 Jan 29 2012 wheezy-proposed-updates
Take a look at the first character in each line, that's the equivalent to "ls -l" output. The "testing" directory starts with an "l", indicating a symlink. The listing shows it, too "testing -> wheezy". The same for the testing-proposed-updates directory. If you look further down, the wheezy and wheezy-proposed-updates directories start with a "d" indicating an actual directory.
I hope this clears it up!