At dawn : ঊষাকালে; ঊষাসমাগমে; সকালে;
Related Words
adman  adown  at dawn  at one  atman  attain  See Words Also In
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Appropriate Prepositions
Apply to (কারো কাছে আবেদন করা): He applied to the principal for free admission.
Breakdown of (বিস্তারিত): Here is statistical breakdown of data.
Full of (পরিপূর্ণ): Our Rivers are full of fishes.
Relevant to (প্রাসঙ্গিক): Your answer is not exactly relevant to my question.
Sad at (দুঃখিত): All his colleagues were very sad at his transfer from this place.
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Idioms
At death’s door (at the point of death- মৃত্যুর দ্বারে) The patient is now at death’s door.
Back and forth (এদিক ওদিক) The mad man was running back and forth in the hospital.
Backstairs influence (secret and illegal influence- গোপন এবং বে আইনী প্রভাব-n) He did not deseve the job, however, he got it by backstairs influence.
Be all and end all (the ultimate out come- চরম পরিণতি—n) A loss of one million taka was the be all and end all of the projects.
In one’s teens (তের থেকে উনিশ বছর বয়সের মাঝে): She is yet in her teens.