মুক্ত বায়ু: Open air.
Related Words
মুক্ত বায়ু  মুক্ত হওয়া  See Words Also In
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Appropriate Prepositions
Arrange for(ব্যবস্থা করা): We have arranged everything for our study tour.
Delighted at/with (আনন্দিত হওয়া): Sharmin was delighted at/with her husband’s promotion.
Due to (কারণে): His absence is due to illness.
Search for (সন্ধান করা): The police searched the halls of residence for arms.
Similar to (সদৃশ): My T-shirt is similar to yours.
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Idioms
At a discount (অনাদৃত) Female education is no longer at a discount now.
At ease (in peace or pleasure – শান্তিতে বা আরামে) A man who has enemies can not live at ease.
At random (indiscriminately—এলোপাথাড়ি-adv.) He talks at random like a mad man.
On the contrary (বিপরীত পক্ষে): I do not hate him; on the contrary I love him.
Rank and file (সাধারণ লোক): We should pay attention to the rank and file of the country.