Standard deviation : ব্যত্যয় প্রমাপ;
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Appropriate Prepositions
Appointment with (সাক্ষাতের সময়): He has an appointment with the minister at 10:00 am.
Attacked with(আক্রান্ত): He is attacked with …
Care for(গ্রাহ্য করা): I do not care for you.
Cope with(সামলানো বা পেরে উঠা): They cannot cope with the situation.
Deaf to, of, in (না শোনা, বধির হওয়া): The boy is deaf to his father’s advice. This man is deaf of/in one ear.
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Idioms
Brown study (day dream-দিবাস্বপ্ন -n) The woman is absorbed in a brown study.
In one’s teens (তের থেকে উনিশ বছর বয়সের মাঝে): She is yet in her teens.
In the wake of (ঠিক পরে): Police came in the wake of the accident.
Run short (কমতি পড়া) —I ran short of money.
Seventh heaven – (মহাখুশী) – I was in the seventh heaven when I heard the news of my BCS final result.