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
Averse to (বিমুখ): Rahim was averse of your various problems.
Bar to(বাধা): Poverty is not a bar to happiness.
Deaf to, of, in (না শোনা, বধির হওয়া): The boy is deaf to his father’s advice. This man is deaf of/in one ear.
Dependent on (নির্ভরশীল): Sepm is dependent on his father.
Independent of (স্বাধীন): They are independent of my health.
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Idioms
Bad book (disfavour-খারাপ নজর —n) The secretary has fallen in the bad book of the manager.
Call in question (সন্দেহ করা): No one can call his honesty in question.
Crocodile tears (মায়াকান্না): He shed crocodile tears at our misery.
In a fix (মুশকিলে পতিত হওয়া): The man is in a fix with his new hairstyle.
Lose one’s heart (প্রেমে পড়া) — He lost his heart to the girl.