Luminosity : ঔজ্জ্বল্য; উজ্জ্বলতা; দীপ্তি; প্রভা; আপেক্ষিক উজ্জ্বলতা;
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Appropriate Prepositions
Adjacent to(সংলগ্ন): The Post Office is adjacent to my house.
Assent to(সম্মতি দেওয়া): The President has assented to the bill.
Control over(নিয়ন্ত্রণ): He has no control over his sons.
Count on/upon (নির্ভর, বিশ্বাস করা): Rahim count on (upon) my help.
Short of (অপর্যাপ্ত): I am running short of money.
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Idioms
At home (comfortable— আরাম) He feels at home in Dhaka now.
Black sheep - (কুলাঙ্গার): Stay away from the Black sheep.
Call to mind (স্মরণ করা): I cannot call to mind your cell number.
Do yeoman’s service (বিশেষ উপকার করা): Freedom fighters have done yeoman’s service for country.
Slip of the pen (লেখায় অসতর্কতাবশত সামান্য ভুল): The mistake is due to a slip of the pen.