Essential element : মূল উপাদান; মৌলিক পদার্থ;
Related Words
essential element  essential nature  See Words Also In
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Appropriate Prepositions
Contribution to (অবদান): His invention made a major contribution to road safety.
Dull at (অপ্টু/কাঁচা): He is dull at mathematics.
Indispensable to (অত্যাবশ্যকীয়): Your help is indispensable to him.
Indulge in (আসক্ত): You should not indulge in social media.
Rebel against (বিদ্রোহ করা): The soldiers rebelled against the king.
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Idioms
Far and wide (সর্বত্র): His fame spread far and wide.
For good (চিরদিনের জন্য): He left the house for good.
To the point (সঠিক) - The boy answered the question to the point.
Under age (অপ্রাপ্ত বয়স্ক)- He could not cast his vote because he was under age.
Weal and woe (joy and sorrow, সুখ দঃখ) —Human life is full of weal and woe.