使用PO / MO翻译WordPress中的comment.php中的复数

I am trying to translate the plural form of comments in the comment section using PO/MO.

in comments.php the code goes like this:

<?php
printf( _nx( '%1$s Comment', '%1$s Comments', get_comments_number(), 'comments', 'theme_domain' ),
?>

I have tried two methods in my .PO file:

Method 1

#.*comments*
msgid "%1$s Comment"
msgid_plural "%1$s *traduction*"
msgstr[0] "%1$s *traduction*"
msgstr[1] "%1$s *traduction*"

Method 2

#.*comments*
msgid "%1$s traduction"
msgstr "%1$s *traduction*"

#.*comments*
msgid "%1$s Comments"
msgstr "%1$s *traductions*"

#.*comments*
msgid "comments"
msgstr "*traductions*"

Could someone tell me which method use when you have several argument in a _nx string?

Many thanks,