Oscillograph : দোলনলিপিলেখ; পরিবর্তনের পরিমাপযন্ত্র;
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Appropriate Prepositions
Appeal to, for(কোন ব্যক্তির কাছে কোন কিছুর জন্য আবেদন করা): The flood affected people appealed to the President for reef.
Careful of(যত্নশীল থাকা): Sadia is careful of her health.
Defend against (রক্ষা করা): We will defend our country against all enemies.
Drop to (নিচে নামানো): Asif dropped his voice to a whisper.
Hit upon (পরিকল্পনা নেয়া): Rahim hit upon a new plan.
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Idioms
Acid test (অগ্নি পরীক্ষা): You must succeed in the acid test of the time you live in.45
Lose one’s heart (প্রেমে পড়া) — He lost his heart to the girl.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.
Set something right (ঠিক করা)— He will set the machine right.
Show good manner (ভালো আচরণ প্রদর্শন ): You should show good manner in the company of young ladies.