At source : অর্থলাভ ইত্যাদির উৎসমূলে;
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Appropriate Prepositions
Argue against (বিপক্ষে বলা): She argued against the bill.
Debar from (বঞ্চিত হওয়া/বাধা দেওয়া): He is debarred from getting a job.
Genius for (দক্ষতা): Nazrul had a genius for convincing girls.
Hit upon (পরিকল্পনা নেয়া): Rahim hit upon a new plan.
Pleased with (সন্তুষ্ট): Shamim is pleased with all his employees.
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Idioms
Arm in arm (পরস্পর সম্পর্কিত বিষয়) All good people should live arm in arm with one another.
In a nutshell (সংক্ষেপে): Tell the whole story in a nutshell.
Lose one’s heart (প্রেমে পড়া) — He lost his heart to the girl.
To the letter (in all details, অক্ষরে অক্ষরে) —Follow my advice to the letter.
Up-to-date (আধুনিক) - Now-a-days ladies are very up to date.