Luminosity : ঔজ্জ্বল্য; উজ্জ্বলতা; দীপ্তি; প্রভা; আপেক্ষিক উজ্জ্বলতা;
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Appropriate Prepositions
Adhere to (লেগে থাকা, অটল থাকা): You should adhere to your principal.
Angry for (কোন কাজে রাগান্বিত হওয়া): Rahim was angry with me for my having done this.
Bad at (অদক্ষ): He is not bad at English.
Congenial to(উপযোগী): The atmosphere is congenial to your health.
Regard for (সম্মান): Good boys have great regard for their teachers.
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Idioms
At-fault (guilty-কিংকর্তব্যবিমূঢ়, অপরাধ, দোষ adj.) You are at fault.
Cut a sorry figure (খারাপ ফল করা): He cuts a sorry figure in the examination.
In full swing (পুরোদমে): The school is in full swing after the vacation.
To the brim (কানায় কানায়) - The river was full to the brim.
Three score (ষাট): He is happy as his brother got three score.