Hi, I found this strange strings: %1$s%2…

Hi, I found this strange stringsString A string is a translatable part of the software. A translation consists of a multitude of localized strings.: %1$s%2$s|akismet_rightnow and %1$s %2$s|akismet_rightnow.
It should be as it is or is there any need to translate it somehow?
Also |akismet_rightnow should be as it is?