Meaning of (गहन अद्ध्यन करना) gahan addhyan karna in english

As noun :
bone up on
Exampleगहन अद्ध्यन करना का हिन्दी मे अर्थ

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(गहन अद्ध्यन करना) gahan addhyan karna can be used as noun.No of characters: 16 including vowels consonants matras. Transliteration : gahana addhyana karanaa

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