Zero hour : পূর্ব-পরিকল্পিত আক্রমণ ইত্যাদির মূহূর্ত;
Related Words
zero  zero hour  zerohour  See Words Also In
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Appropriate Prepositions
Breakdown of (বিস্তারিত): Here is statistical breakdown of data.
Caution against(সাবধান): Take all cautions against the danger.
Independent of (স্বাধীন): They are independent of my health.
Repentance for (অনুতাপ): He has repentance for the past.
Smile on/upon (অনুগ্রহ করা): Fortune smiles on/upon the brave.
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Idioms
At the top of (শীর্ষে): The boy shouted at the top of his voice.
In cold blood (ঠান্ডা মাথায়): They committed this murder in cold blood.
In no time (শীঘ্র): He will finish the work in no time.
Round the clock (সমস্ত দিন): He is working round the clock.
See to (বিবেচনা করা)— Can you see to it that everyone gets a copy of this memo?