Rectangular hyperbola : সমপরাবৃত্ত;
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Appropriate Prepositions
Afraid of(ভীত): An honest man is not afraid of telling the truth.
Appropriate to(যোগ্য): His answer is appropriate to the question.
Look for (খোঁজা): I was looking for the lost phone.
Look over (পরীক্ষা করা): He was looking over the answer scripts.
Rule over (শাসন করা): In the absence of the Parliament, the President rules over the country.
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Idioms
Burning question - (গুরুত্বপূর্ন বিষয়): Poverty problem is a burning question of our country.
On the whole (মোটের ওপর): On the whole, his conduct is good.
Out of temper (ক্রুদ্ধ): The teacher is out temper to see the overall results.
Three score (ষাট): He is happy as his brother got three score.
White elephant (অত্যন্ত ব্যয়সাপেক্ষ বিলাসিতা): At last the department proved to be a white elephant.