At a time : এককালীন;
Related Words
at a time  at home  at that time  at what time  ata time  See Words Also In
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Appropriate Prepositions
Abide with(সঙ্গে থাকা): If you would like to rest for a while, you can abide with me.
Apology for (কোনো কারনে ক্ষমা চাওয়া): Sajib should ask apology to her of his mistake.
Close to(নিকটে): Our College is close to the Post Office.
Die by (দূর্ঘটনা বা অপঘাতে মরা/কোন কিছু দ্বারা মারা যাওয়া): He died by a road accident.
Take after (সদৃশ হওয়া, একই রকম হওয়া): The boy takes after his brother.
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Idioms
At times (মাঝে মাঝে): He at times comes here.
Burning question - (গুরুত্বপূর্ন বিষয়): Poverty problem is a burning question of our country.
Easy and free (অমায়িক): The boy is easy and free, so he has many friends.
Safe and sound (নিরাপদে)— He reached home safe and sound.
Soft Soap (নিজ অভিপ্রায়ে/অভিসন্ধিতে তোষামোদ করা): He was expert in soft soap.