Vacuum tube : অবাধ বিদ্যুত্প্রবাহের জন্য নির্মিত প্রায় বায়ুশূন্য বদ্ধ নল; নির্বাত-নলবিশেষ;
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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.
Ask for (কোনো কিছু চাওয়া): Do not ask him for any help because he doesn’t like to help anyone.
Composed of(তৈরী): This medicine is composed of vitamins and minerals.
Conceal from(লুকানো) Do not conceal anything from me.
Concern with (জড়িত থাকা): Asif is not concerned with this conspiracy.
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Idioms
Head and ears (সম্পূর্ণরূপে): He is over head and ears in debt.
Pack of lies (ডাঁহা মিথ্যা)—He told pack of lies to prove himself innocent.
Put the cart before the horse (to reverse the natural order of things-কোনো জিনিসের স্বাভাবিক ক্রমকে পাল্টে দেয়া) - The leader put the cart before the horse.
To the contrary (against what some one had said, পক্ষান্তরে) —He said nothing to the contrary.
With a lavish hand (মুক্ত হস্তে)— Give away something with a lavish hand.