Specialise : বিশেষজ্ঞ হত্তয়া;
Related Words
special ization  specialisation  specialise  specialised  specialises  specialising  specialism  specialist  specialists  specialization  specialize  specialized  specializes  specializing  speckles  speckless  See Words Also In
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Appropriate Prepositions
Adhere to (লেগে থাকা, অটল থাকা): You should adhere to your principal.
Burst out a laughter(হাসিতে ফেটে পড়া) He bursts out a laughter.
Concern with (জড়িত থাকা): Asif is not concerned with this conspiracy.
Crave for(আকাঙ্ক্ষা করা): Everyone craves for care.
Drop to (নিচে নামানো): Asif dropped his voice to a whisper.
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Idioms
ABC - (প্রাথমিক জ্ঞান): I don't know the ABC of politics.
After all - (সব কথার পরেও): I rang and told her I couldn't come after all.
Back and forth (to and fro-এদিক ওদিক – adv.) The mad man was walking back and forth in the doctor’s chamber.
Fall flat (ফলপ্রসূ না হওয়া): This business is going to fall flat.
Now and then (মাঝে মাঝে): He comes here now and then.