Diffraction : অপবর্তন; বিচ্ছুরণ; ব্যাবর্ত্তন;
Related Words
deforestation  deprecation  depreciation  diffraction  See Words Also In
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Appropriate Prepositions
Appear at/in(উপস্থিত হওয়া): I should appear at/in the exam hall in time.
Ask for (কোনো কিছু চাওয়া): Do not ask him for any help because he doesn’t like to help anyone.
Conceal from(লুকানো) Do not conceal anything from me.
Dressed in (সজ্জিত, পরিহিত): The girl was dressed in silk.
Feed on (খেয়ে বাঁচা): The cow feeds on grass.
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Idioms
Bear in mind (remember— মনে রাখা —V): You should also bear in mind the additional costs of the mortgage.
In black and white – (লিখিতভাবে) – Put forward your proposal in black and white.
Of course (অবশ্যই): Of course, you know what that meant.
To meet trouble half-way (পুরোপুরি মোকাবেলার আগেই হাল ছেড়ে দেয়া): He met trouble half way after getting the instructions.
Ups and downs (উত্থান পতন)- There is ups and downs in a man's life.