Spectroscopic : বর্ণালিবীক্ষণ সংক্রান্ত;
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Appropriate Prepositions
Angry for (কোন কাজে রাগান্বিত হওয়া): Rahim was angry with me for my having done this.
Apathy towards (অনাগ্রহ): The student has great apathy towards his studies.
Qualified for (যোগ্য প্রতিপন্ন হওয়া): No candidate was properly qualified for the post.
Refrain from (বিরত রাখা বা থাকা): I refrained him from smoking.
Sick of (ক্লান্ত): He is sick of this idle life.
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Idioms
As a rule (নিয়ম অনুসারে.) As a rule, she kept silent in the meeting.
Foul play (অসদাচারণ করা): We feared that he had met with foul play.
Head and ears (সম্পূর্ণরূপে): He is over head and ears in debt.
Look into something (তদন্ত করা- investigate) - The manager looked into the matter.
Through and through (পুঙ্খানুপুঙ্খু রুপে)- He read the poem through and through.