Exchange ratio : বিনিময় অনুপাত;
Related Words
exchange greetings  exchange rate  exchange ratio  See Words Also In
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Appropriate Prepositions
Adequate to(সমানুপাতিক): The salary, he gets, is not adequate to the volume of work he has to do.
Call for(চাওয়া): I will call for his explanation.
Concerned with(জড়িত): She was concerned with such things.
Enter into (আলোচনা করতে আরম্ভ করা): Let’s not enter into details at this stage.
Play on (বাজানো): They play on the piano.
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Idioms
After all - (সব কথার পরেও): I rang and told her I couldn't come after all.
All along - (সব সময়): I was present in the meeting all along.
At times (মাঝে মাঝে): He at times comes here.
Beggar description - (অবর্ণনীয় হওয়া): The distress of the Muslims in Bosnia beggars description.
In a nutshell (সংক্ষেপে): Tell the whole story in a nutshell.