Rub up : পালিশ করা; স্মৃতি ঝালাইয়া তোলা;
Related Words
rev up  rip up  rub  rub off  rub up  See Words Also In
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Appropriate Prepositions
Cause for (চিন্তিত হওয়ার কারণ): He has never given me any cause for concern.
Compete with(প্রতিযোগিতা করা): He does not pke to compete with
Die of, for, from (মারা যাওয়া): He died of cholera. He died for his country. He died from an injury.
Fail in (ব্যর্থ হওয়া): He failed in getting internet connection in his room.
Relevant to (প্রাসঙ্গিক): Your answer is not exactly relevant to my question.
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Idioms
ABC - (প্রাথমিক জ্ঞান): I don't know the ABC of politics.
Dead language (যে ভাষা এখন আর কথ্য নয়): Sanskrit is a rich language, but it is now a dead language.
Pandora’s box (আপাতঃ দৃষ্টিতে ভালো মনে হলেও আসলে ভালো নয়)—His words proved to be Pandora’s box.
Round the clock (সমস্ত দিন): He is working round the clock.
Speed money (ঘুষ; উৎকোচ): He hankers after speed money.