hey hossam,
are you using the latest language and have also translated it completely?
because just taking your first screenshot as an example "A new comment is posted on the blog post:" this is part of the en-GB.com_easyblog.ini language file, around line 1616: COM_EASYBLOG_NOTIFICATION_NEW_COMMENT_POSTED="A new comment is posted on the blog post:"

so either this line is missing or something else went wrong inside your file. can you check this at your end?

btw: all translations are handled at transifex here: https://opentranslators.transifex.com/projects/p/easyblog/ perhaps you want to participate there, this should also take care of any formatting issues of the file itself.

hope that helps and have a nice day

they are already translated in arabic at my arabic "ar-AA.com_easyblog.ini" file but still appear in english

hey hossam,
then something might be wrong with the file in general. can you provide us with your backend access and ftp details so that we can check this directly at your end?
you can enter these informations into the "site details" tab below the box when you're posting a message here in the forum.