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detailed; full; minute
knowing very well; knowledgeable (about); well-acquainted (with); well-informed (about); familiar (with)
詳しい説明をお願いできますか。
Could you give a detailed explanation?
彼はコンピューターに詳しいです。
He is knowledgeable about computers.
彼はこの辺りに詳しい。
He knows this area well.