May be that I'm blind. I can't find an option to download a third party plugin lang pack after translation.
Any advice would be helpfull.
In reply to Ralf Hilgenstock
Re: How to download a lang pack from third party module
{$a->নাম} - {$a->তারিখ} দ্বারা
All plugins and core components, standard or contributed, are part of single language pack. In other words, the ZIPs from https://download.moodle.org/langpack/3.0/ contain additional plugins' translations too.