如何重新安装message？

Hi,

Google translate tell me this post says

Once accidentally delete a message, how to reinstall?

I am not sure if it means the Poster Delete the App itself or a Message in the app

我不知道如果这意味着海报删除应用程序本身或应用程序中的讯息
Or 我不知道如果這意味著海報刪除應用程序本身或應用程序中的訊息
I have no idea where the word breaks are. 我不知道在哪裡的話破裂

If you deleted the Messages App you will have to Restore the whole OS.

http://support.apple.com/kb/HT4718?viewlocale=zh_CN

8:42 PM Tuesday; February 5, 2013

Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

 iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 Couple of iPhones and an iPad
"Limit the Logs to the Bits above Binary Images."  No, Seriously