Spectrogram : বর্ণালির আলোকক চিত্র বা রেখা চিত্র;
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Appropriate Prepositions
Attain to (লাভ করা): He will not attain to his objective so soon.
Break in (কথার মাঝে কথা বলা): As she was talking, he suddenly broke in, saying, ‘that’s a rat!’
Close to(নিকটে): Our College is close to the Post Office.
Covetous of(লোভী হওয়া): He is covetous of wealth.
Effect of (প্রভাব): The effect of corruption is very harmful for our society.
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Idioms
At a round rate (at the fixed price – নির্ধারিত মূল্যে) Things are selling in the shop at a round rate.
At dead of night (গভীর রাতে) The police caught the thief at dead of night.
Hush money (ঘুষ): He offered a hush money to disclose the file.
In a nutshell (সংক্ষেপে): Tell the whole story in a nutshell.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.