I have a translation file for a business software. It contains partially translated lines that needs to be reviewed and lines which have not been translated yet. The file contains around 4500 lines. Arabic to English. Some text is originally in English, so it doesn't need to be translated or reviewed. It is hard to determine the exact number of lines requiring translation or reviewing, but it is about 70% of the total number of lines.
The file is in the PO format.