Spectrum : বর্ণালী; তিন পলা কাচ দ্বারা পৃথক করা আলোকের বর্ণ;
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spectrometer  spectrum  spectrums  See Words Also In
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Appropriate Prepositions
Answer for(কোনো কারনে জবাবদিহি করা): He will have to answer for his misdeeds.
Break in (কথার মাঝে কথা বলা): As she was talking, he suddenly broke in, saying, ‘that’s a rat!’
Care of(যত্ন নেওয়া): You should take care of your health.
Guilty of (অপরাধী/দোষী): The convict was guilty of murder.
Make up of (গঠিত): Village is made up of many homes.
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Idioms
Fight shy (এড়িয়ে চলা): Why do you fight shy of your teacher?
Foul play (অসদাচারণ করা): We feared that he had met with foul play.
Hard nut to crack (কঠিন সমস্যা): The problem of adult education is really hard nut to crack.
Make head or tail – (মাথামুন্ডু বুঝা) – I cannot make head or tail of what you say.
Tooth and nail (strongly, প্রবলভাবে)-He fought tooth and nail against his enemy.