Radar : যে বেতার যন্ত্রের সাহায্যে দূরবর্তী জাহাজ বা বিমানের অবস্থান ধরা পড়ে;
Related Words
radar  radiator  raider  reader  See Words Also In
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Appropriate Prepositions
Apart from(ছাড়া, ব্যতীত, দূরে): They pave apart from each other.
Grasp at (আঁকড়িয়ে ধরা): He grasped me at my hand.
Inferior to (নীচু/হীন): He is inferior to his neighbor.
Infested with (অতিষ্ঠ): The room is infested with rats.
Welcome to (স্বাগত জানানো): You are welcome to our new office.
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Idioms
At the eleventh hour (at the last moment-শেষ মুহুর্তে adv.) The patient was in a dangerous condition and the doctor came at the eleventh hour.
As ill-luck would have it (unfortunately- দুর্ভাগ্যবশত) A child was born to them but, as ill-luck would have it, it died when it was eight days old.
In black and white – (লিখিতভাবে) – Put forward your proposal in black and white.
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.
Wild goose chase (useless pursuit, পন্ডশ্রম) —Do not waste time in wild goose chase.