Solid angle : অস্র; ঘনকোণ;
Related Words
sliding scale  solid angle  See Words Also In
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Appropriate Prepositions
Bad at (অদক্ষ): He is not bad at English.
Cure of, for(রোগমুক্ত হওয়া): This man was cured of This drug is a cure for typhoid.
Dwell upon (আলোচনা করা): They dwell long upon the matter.
Eager for, about (একাগ্র): The students for this school are eager for knowledge. The teacher is eager about the success of his students.
Enter into (আলোচনা করতে আরম্ভ করা): Let’s not enter into details at this stage.
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Idioms
At-fault (guilty-কিংকর্তব্যবিমূঢ়, অপরাধ, দোষ adj.) You are at fault.
Dead against (তীব্র বিরোধী - strongly opposed to): I am dead against corruption.
See to (বিবেচনা করা)— Can you see to it that everyone gets a copy of this memo?
Three R's (প্রাথমিক শিক্ষা)— He has not yet learnt the three R's.
With the sweat of one’s brow (মাথার ঘাম পায়ে ফেলে) — He earns his livelihood with the sweat of his brow.