Relative velocity : আপেক্ষিক বেগ;
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Appropriate Prepositions
Acquit of (অব্যাহতি দেয়া): The chief justice acquitted him of the charge of murder.
Aptitude for(স্বাভাবিক দক্ষতা, যোগ্যতা): He has no aptitude for public service.
Attend to(মনোযোগ দেওয়া): Please attend to my advice.
Burdened with (ভারাক্রান্ত): Rahim is burdened with a big family.
Drop to (নিচে নামানো): Asif dropped his voice to a whisper.
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Idioms
At a discount (অনাদৃত) Female education is no longer at a discount now.
End in smoke (ব্যর্থ হওয়া): All his plans ended in smoke.
From hand to mouth (দিন আনে দিন খায়): The poor man live from hand to mouth.
Get rid of (মুক্তি পাওয়া): Try to get rid of the rogue.
Make head or tail – (মাথামুন্ডু বুঝা) – I cannot make head or tail of what you say.