Hello, Motiur Rahman Oni. Welcome to the Wikimedia Meta-Wiki! This website is for coordinating and discussing all Wikimedia projects. You may find it useful to read our policy page. If you are interested in doing translations, visit Meta:Babylon. You can also leave a note on Meta:Babel or Wikimedia Forum if you need help with something (please read the instructions at the top of the page before posting there). Happy editing!