Formulas : সূত্র; ফরমূলা; অনুমোদিত বিধি;
Related Words
formalise  formalised  formalism  formalist  formalizes  formless  formulas  See Words Also In
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Appropriate Prepositions
Admit into(প্রবেশ করতে দেওয়া): Only the selected people were admitted into the theater.
Concerned with(জড়িত): She was concerned with such things.
Independent of (স্বাধীন): They are independent of my health.
Look for (খোঁজা): I was looking for the lost phone.
Look over (পরীক্ষা করা): He was looking over the answer scripts.
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Idioms
Back and forth (to and fro-এদিক ওদিক – adv.) The mad man was walking back and forth in the doctor’s chamber.
Dead language (যে ভাষা এখন আর কথ্য নয়): Sanskrit is a rich language, but it is now a dead language.
Nip in the bud (অঙ্কুরে বিনষ্ট হওয়া): All his hopes were nipped in the bud.
Set something right (ঠিক করা)— He will set the machine right.
Well-to-do (সঙ্গতিপূর্ণ) - He was not born in a well-to-do family.