Once in a while : কখনোসখনো; মাঝেমাঝে; কখন-সখন; কখন কখন; বড় একটা নহে;
Related Words
once in a while  onceinawhile  See Words Also In
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Appropriate Prepositions
Angry with(কারো সাথে ক্রুদ্ধ হওয়া): The teacher was very angry with the students.
Argue against (বিপক্ষে বলা): She argued against the bill.
Authority on(বিশেষজ্ঞ পন্ডিত): Kamal was an authority on English literature.
Convince of(বিশ্বাস হওয়া): I am convinced of your efficiency.
Hostile to (বিরোধী বা বিরূপ ভাবাপন্ন): Nobody is hostile to you.
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Idioms
Carry the day (জয়লাভ করা) The boys carried the day in the debate competition.
Crying need (জরুরী): Mass education is a crying need for India.
Irony of fate (ভাগ্যের পরিহাস): He could not succeed by irony of fate.
Pave the way (সুপ্রসন্ন করা) – I am sure I can pave the way for your success.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.