Sound wave : শব্দ-তরঙ্গ;
Related Words
sound box  sound effects  sound off  sound wave  sound-wave  See Words Also In
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Appropriate Prepositions
Abound in(প্রাচুর্যপূর্ণ হওয়া): Fish abounds in the pond.
Concern with (জড়িত থাকা): Asif is not concerned with this conspiracy.
Feed with (কোনো কিছু খাওয়া): They feed the cow with grass.
Rely on (নির্ভর করা): We should not rely on a lazy man.
Smile on/upon (অনুগ্রহ করা): Fortune smiles on/upon the brave.
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Idioms
ABC - (প্রাথমিক জ্ঞান): I don't know the ABC of politics.
Gift of the gab (বাকপটুতা): An advocate should have the gift of the gab.
Null and void (বাতিল): The deed has been null and void now.
Pass sth/sb off as sth/sb (মিথ্যা পরিচয় দেয়া; Pretend – ভান করা): They were trying to pass off these shirts as genuine Armani.
Well off (স্বচ্ছল) - Jim and Della were not well off.