Exchange ratio : বিনিময় অনুপাত;
Related Words
exchange greetings  exchange rate  exchange ratio  See Words Also In
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Appropriate Prepositions
Annoyed at(ব্যক্তি ছাড়া অন্যকিছুর প্রতি বিরক্ত): They were annoyed at his rough behavior.
Argue over (কোন বিষয়ে তর্ক করা): The kids are arguing over which TV program to watch.
Independent of (স্বাধীন): They are independent of my health.
Look at (তাকানো): Students look at the blackboard.
Make of (কোনো উপকরণ দ্বারা সরাসরি তৈরী বোঝাতে): This necklace is made of gold.
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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.
Cut a sorry figure (খারাপ ফল করা): He cuts a sorry figure in the examination.
On the wane (হ্রাসমান): His fame is on the wane now.
Slow coach (অলস): You cannot expect much from a slow coach.
Turn a deaf ear to (pay no attention, প্রত্যাখান করা) —He turned a deaf ear to my proposal.