Cosmic rays : মহাজাগতিক রশ্মি;
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Appropriate Prepositions
Ask about (কাউকে খোঁজ করা): Rahim asked about Karim.
Devoid of (বিহীন/বর্জিত): He is devoid of common sense.
Dull at (অপ্টু/কাঁচা): He is dull at mathematics.
Loyal to (অনুগত): Every citizen must be loyal to the state.
Object to (প্রতিবাদ করা): Many people objected to the remarks of the leader.
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Idioms
Easy and free (অমায়িক): The boy is easy and free, so he has many friends.
Head and ears (সম্পূর্ণরূপে): He is over head and ears in debt.
Pick one’s pocket (পকেট মারা)— He tried to pick my pocket.
Run short (কমতি পড়া) —I ran short of money.
Turn a deaf ear to (pay no attention, প্রত্যাখান করা) —He turned a deaf ear to my proposal.