স্থির তরঙ্গ: Stationary wave.
Related Words
স্থির তরঙ্গ  স্থিরচিত্ত  See Words Also In
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Appropriate Prepositions
Attentive to(মনোযোগী): He is attentive to his business.
Concerned for (উদ্বিগ্ন): The parents are concerned for their growing children.
Easy of (সরল): The teacher is easy of approach.
Fatigued by (ক্লান্ত): He was fatigued by hard work.
Independent of (স্বাধীন): They are independent of my health.
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Idioms
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
From hand to mouth (দিন আনে দিন খায়): The poor man live from hand to mouth.
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.
Speed money (ঘুষ; উৎকোচ): He hankers after speed money.