Fire alarm : স্বয়ংক্রিয় অগ্নি সংকেত ব্যবস্থা;
Related Words
fire alarm  fire-alarm  See Words Also In
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Appropriate Prepositions
Afraid of(ভীত): An honest man is not afraid of telling the truth.
Ask for (কোনো কিছু চাওয়া): Do not ask him for any help because he doesn’t like to help anyone.
Attend to(মনোযোগ দেওয়া): Please attend to my advice.
By heart (মুখস্থ): Kamal learnt to poem by heart.
Rely on (নির্ভর করা): We should not rely on a lazy man.
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Idioms
At ease (in peace or pleasure – শান্তিতে বা আরামে) A man who has enemies can not live at ease.
At liberty (free-মুক্ত-adj.) They are at liberty to go anywhere.
Up to (পর্যন্ত) - I have done the exercises up to page 40.
Up-to-date (আধুনিক) - Now-a-days ladies are very up to date.
With a lavish hand (মুক্ত হস্তে)— Give away something with a lavish hand.