Spectroscopy : বর্ণালিবীক্ষণ যন্ত্র;
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spectroscope  spectroscopic  spectroscopy  See Words Also In
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Appropriate Prepositions
Add to (বৃদ্ধি করা, যোগ করা): The doll-dance in the exhibition added to our pleasure.
Associate with, in(জড়িত হওয়া): This man was associated with crime.
Caution against(সাবধান): Take all cautions against the danger.
Depend on (নির্ভর করা): Presently, the students depend on/upon guide books.
Monument to (স্মৃতিসৌধ): The monument to your right is a popular tourist attraction.
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Idioms
As ill-luck would have it (unfortunately- দুর্ভাগ্যবশত) A child was born to them but, as ill-luck would have it, it died when it was eight days old.
Fall flat (ফলপ্রসূ না হওয়া): This business is going to fall flat.
In the wake of (ঠিক পরে): Police came in the wake of the accident.
Learn by heart (মুখস্থ করা)— He learnt the poem by heart.
Scapegoat (উদোর পিন্ডি বুধোর ঘাড়ে)—He was made scapegoat of the incident.