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
Abide by(মেনে চলা): We must abide by the rules of discipline.
Careful of(যত্নশীল থাকা): Sadia is careful of her health.
Concern with (জড়িত থাকা): Asif is not concerned with this conspiracy.
Delegate to (প্রতিনিধি): Nazrul welcomed the delegates to the new conference.
Run on (বিরতিহীন চলা): The bus is running on time.
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Idioms
Call to mind (স্মরণ করা): I cannot call to mind your cell number.
In full swing (পুরোদমে): The school is in full swing after the vacation.
Let loose (বল্গাহীনভাবে ছেড়ে দেয়া): He let his horse loose in the field.
To the backbone (to the core, হাড়ে হাড়ে) —The boy is wicked to the backbone.
Under age (অপ্রাপ্ত বয়স্ক)- He could not cast his vote because he was under age.