Semicircular : অর্ধবৃত্তাকার;
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semi-circular  semicircular  See Words Also In
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Appropriate Prepositions
Appear at/in(উপস্থিত হওয়া): I should appear at/in the exam hall in time.
Averse to (বিমুখ): Rahim was averse of your various problems.
Breakdown of (বিস্তারিত): Here is statistical breakdown of data.
Complain to (কারো কাছে নালিশ করা): You should not complain to his parents.
Faith in (বিশ্বাস): I have no faith in him.
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Idioms
Call in question (সন্দেহ করা): No one can call his honesty in question.
Hold water (ধোপে টেকা): This policy will not hold water in this situation.
Lion’s share (বড় মাপের অংশ): He took the lion’s share of the profit.
Set free (মুক্ত করা): The prisoners were set free.
Take one to task (rebuke, তিরস্কার করা)— He took me to task for negligence of duty.