这两个文件是 Office 2011 的人工制品，它们阻止删除“内容”目录。我如何删除这些？
sh-3.2# ls -l -a
total 21496
drwx------+ 15 Beef staff 480 Jan 14 23:32 .
drwxr-xr-x+ 19 Beef staff 608 Jan 14 23:40 ..
-rw-r--r--@ 1 Beef staff 10244 Jan 10 10:36 .DS_Store
-rw-r--r-- 1 Beef staff 0 Dec 25 23:13 .localized
drwxrwxrwx 47 Beef staff 1504 Jan 2 00:01 CSC119 - 1228
drwxrwxrwx 7 Beef staff 224 Jan 1 22:50 Chris 1228
drwxrwxr-x@ 3 Beef staff 96 Aug 25 2010 Contents
drwxrwxrwx@ 5 Beef staff …