Touch off : দাগা; আরম্ভ করান; সূত্রপাত করা;
Related Words
tick off  ticks off  to show off  took off  toss off  touch off  touch up  touchoff  See Words Also In
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Appropriate Prepositions
Conform to (নিয়মনীতি অনুসরণ করা): The employees have to conform to a strict dress code.
Decide upon (সিদ্ধান্ত করা): We have not yet decided whether we are going to picnic.
Good for, at (ভাল): This man is good for nothing. He is good at English.
Repent on (নির্ভরশীল): He is repent on his parents.
Road to (উপায়/ রাস্তা): There is no easy road to learning.
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Idioms
At least (in the lowest estimate- কমপক্ষে) He is the owner of thirty lakh taka at least.
Lose heart (হতাশ হওয়া) — Do not lose heart in danger.
Part and parcel (অবিচ্ছেদ্য অংশ): Education is part and parcel to build a civilized nation.
Pandora’s box (আপাতঃ দৃষ্টিতে ভালো মনে হলেও আসলে ভালো নয়)—His words proved to be Pandora’s box.
Rank and file (সাধারণ লোক): We should pay attention to the rank and file of the country.