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
Agree with, on, to(একমত হওয়া): My father agreed with me on this point, but he did not agree to my proposal to set up a canteen.
Attest to(প্রত্যয়ন করা): I like to attest to your ability.
Delighted at/with (আনন্দিত হওয়া): Sharmin was delighted at/with her husband’s promotion.
Desire for (কামনা): He has no desire for fame.
Senior to (বয়সে বড়): He is senior to me by two years.
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Idioms
Arm in arm (পরস্পর সম্পর্কিত বিষয়) All good people should live arm in arm with one another.
Easy and free (অমায়িক): The boy is easy and free, so he has many friends.
In a nutshell (সংক্ষেপে): Tell the whole story in a nutshell.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.
Through and through (পুঙ্খানুপুঙ্খু রুপে)- He read the poem through and through.