Atomic mass : পারমাণবিক ভর;
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Appropriate Prepositions
Argue against (বিপক্ষে বলা): She argued against the bill.
Attacked by(আক্রান্ত ব্যক্তিবাচক): He has been attacked by a gang of robbers.
Attention to(মনোযোগ): He has no attention to his studies.
Derive from (উৎসারিত হওয়া): The one has been derived from the poem.
Rid of (মুক্তি দেওয়া): He will get rid of troubles soon.
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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.
End in smoke (ব্যর্থ হওয়া): All his plans ended in smoke.
In black and white – (লিখিতভাবে) – Put forward your proposal in black and white.
Maiden speech (প্রথম বক্তৃতা): His maiden speech fell flat on the audience.
White elephant (অত্যন্ত ব্যয়সাপেক্ষ বিলাসিতা): At last the department proved to be a white elephant.