Touch on : কিছু বলা; প্রান্তাবস্থিত হত্তয়া; সংক্ষেপে আলোচনা করা;
Related Words
this one  took on  toucan  touch on  toughen  tuck in  See Words Also In
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Appropriate Prepositions
Abound in(প্রাচুর্যপূর্ণ হওয়া): Fish abounds in the pond.
Apologize to (ক্ষমা প্রার্থনা করা, দুঃখসহ ত্রুটি স্বীকার করা): The student apologized to the Principal for adopting unfair means in the examination.
Die of, for, from (মারা যাওয়া): He died of cholera. He died for his country. He died from an injury.
Dull at (অপ্টু/কাঁচা): He is dull at mathematics.
Hard of (কানে খাটো বা কম শোনা): Ratan is a hard of hearing.
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Idioms
Fair and square (সৎ): The learned persons should be fair and square.
Fight shy of (এড়িয়ে যাওয়া): Honest boys always fight shy of bad and dishonest friends.
Kith and kin (নিকট আত্মীয়): He has no relation with his kith and kin.
Pros and cons (খুঁটিনাটি): You should consider the pros and cons of the system.
Steer clear of (avoid, দূরে থাকা)— You must steer clear of evil company.