Stationary wave : উত্থানপতনশীল কিন্তু অগ্রগতিহীন তরঙ্গ; সামরিক ঘাঁটি সংক্রান্ত অবস্থিত;
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Appropriate Prepositions
Anxious about (কোনো কিছুর ব্যাপারে চিন্তিত বা উদ্বিগ্ন): Karim is anxious about his father’s death. Karim is anxious for getting a job.
Apply to (কারো কাছে আবেদন করা): He applied to the principal for free admission.
By heart (মুখস্থ): Kamal learnt to poem by heart.
Certain of(নিশ্চিত): Jamal is certain of his success.
Delighted at/with (আনন্দিত হওয়া): Sharmin was delighted at/with her husband’s promotion.
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Idioms
At home (comfortable— আরাম) He feels at home in Dhaka now.
At the top of (শীর্ষে): The boy shouted at the top of his voice.
Null and void (বাতিল): The deed has been null and void now.
Now and then (মাঝে মাঝে): He comes here now and then.
Run high (বেড়ে যাওয়া) —The price of everything has run high.