Respiratorysystem : শ্বসনতন্ত্র;
Related Words
respiratory quotient  respiratory system  respiratorysystem  See Words Also In
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Appropriate Prepositions
Authority on(বিশেষজ্ঞ পন্ডিত): Kamal was an authority on English literature.
Born of(জন্মগ্রহণ করা): I was born of a middle class family.
By heart (মুখস্থ): Kamal learnt to poem by heart.
Fatigued by (ক্লান্ত): He was fatigued by hard work.
Pity for (করুণা, সমব্যথা): I feel pity for this helpless old man.
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Idioms
Carry the day (জয়লাভ করা) The boys carried the day in the debate competition.
Crying need (জরুরী): Mass education is a crying need for India.
Gala day (বিশেষ দিন): The Eid–Ul-Fitr is a gala day for Muslims.
Lose one’s heart (প্রেমে পড়া) — He lost his heart to the girl.
Sheet anchor (শেষ আশ্রয়; প্রধান অবলম্বন; আসল খুঁটি)— This small piece of land is his sheet anchor.