Bio mass : কোনো নির্দিষ্ট স্থানের সমগ্র জীবসমষ্টি;
Related Words
bio mass  biomass  booms  by no means  See Words Also In
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Appropriate Prepositions
Conceal from(লুকানো) Do not conceal anything from me.
Entrust to (কাউকে কোনো কিছু বিশ্বাস করে দেওয়া): He entrusted the thing to me.
Hatred for (ঘৃণা): I have no hatred for anyone.
Run on (বিরতিহীন চলা): The bus is running on time.
Work for (কারো জন্য কাজ করা): She works for a construction company.
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Idioms
Arm in arm (পরস্পর সম্পর্কিত বিষয়) All good people should live arm in arm with one another.
As ill-luck would have it (unfortunately- দুর্ভাগ্যবশত) A child was born to them but, as ill-luck would have it, it died when it was eight days old.
Black sheep - (কুলাঙ্গার): Stay away from the Black sheep.
Easy and free (অমায়িক): The boy is easy and free, so he has many friends.
Moot point (অমীমাংসিত বিষয়): Dowry system is still a moot point in Bangladesh.