Fire alarm : স্বয়ংক্রিয় অগ্নি সংকেত ব্যবস্থা;
Related Words
fire alarm  fire-alarm  See Words Also In
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Appropriate Prepositions
Business with (ব্যবসা, কাজ): He is pleased to do business with you.
Care of(যত্ন নেওয়া): You should take care of your health.
Close to(নিকটে): Our College is close to the Post Office.
Hinge on/upon (নির্ভর করা): The whole matter hinges upon this clue.
Rid of (মুক্তি দেওয়া): He will get rid of troubles soon.
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Idioms
In the wake of (ঠিক পরে): Police came in the wake of the accident.
Run short (কমতি পড়া) —I ran short of money.
Slip of the tongue (বলায় সামান্য ভুল): This is a slip of the tongue; don’t pay much stress on it.
To the brim (কানায় কানায়) - The river was full to the brim.
Ups and downs (উত্থান পতন): There are ups and downs in a man’s life.