স্থির তরঙ্গ: Stationary wave.
Related Words
স্থির তরঙ্গ  স্থিরচিত্ত  See Words Also In
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Appropriate Prepositions
Deal in, with, out (ব্যবসা করা, ব্যবহার করা, বন্টন করা): The man deals in rice. He does not know how to deal with a customer. The Chairman dealt out the relief materials to the flood affected people.
Free from (মুক্ত): He is now free from danger.
Grateful to (কৃতজ্ঞ): We should be grateful to our teachers.
Run into (জড়িয়ে পড়া): He had run into debt.
Work with (কারো সাথে কাজ করা): They will be working with me on the new project.
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Idioms
Give in (বশ্যতা স্বীকার করা): We will never give in to our enemies.
In no time (শীঘ্র): He will finish the work in no time.
Set out (যাত্রা করা)— I will set out in time.
Sheet anchor (শেষ আশ্রয়; প্রধান অবলম্বন; আসল খুঁটি)— This small piece of land is his sheet anchor.
Through and through (পুঙ্খানুপুঙ্খু রুপে)- He read the poem through and through.