Spectroscopic : বর্ণালিবীক্ষণ সংক্রান্ত;
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Appropriate Prepositions
Behave towards(ব্যবহার করা): The students behaved objectionably towards the Head teacher.
Feed with (কোনো কিছু খাওয়া): They feed the cow with grass.
Look after (দেখাশুনা): He looks after me.
Loyal to (অনুগত): Every citizen must be loyal to the state.
Welcome to (স্বাগত জানানো): You are welcome to our new office.
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Idioms
At home (comfortable— আরাম) He feels at home in Dhaka now.
Fall flat (ফলপ্রসূ না হওয়া): This business is going to fall flat.
Lion’s share (বড় মাপের অংশ): He took the lion’s share of the profit.
Look into something (তদন্ত করা- investigate) - The manager looked into the matter.
Man of letters (পন্ডিত ব্যক্তি): You are truly a man of letters.