Vacuum flask : তরল পদার্থ ঠাণ্ডা বা গরম রাখার জন্য নির্বাত বোতল; বোতল;
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Appropriate Prepositions
Adequate to(সমানুপাতিক): The salary, he gets, is not adequate to the volume of work he has to do.
Capable of(সক্ষম): He is capable of doing it.
Composed of(তৈরী): This medicine is composed of vitamins and minerals.
Consist of(গঠিত হওয়া): The committee consists of ten members.
Shout at (চিৎকার করে ডাকা): Do not shout at your parents.
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Idioms
At liberty (free-মুক্ত-adj.) They are at liberty to go anywhere.
Breathe one’s last (decease, die- শেষ নিঃশেষ ত্যাগ করা, মরে যাওয়া) The man breathed his last in his native village.
Gala day (বিশেষ দিন): The Eid–Ul-Fitr is a gala day for Muslims.
Kith and kin (নিকট আত্মীয়): He has no relation with his kith and kin.
Slip of the pen (লেখায় অসতর্কতাবশত সামান্য ভুল): The mistake is due to a slip of the pen.