先ほどのご説明をもう少し詳しく教えていただけますか？ — Could you explain what you mentioned a moment ago in a little more detail? (Workplace · Meeting, Formal to Superior, JLPT N3)

Gesture & etiquette

Maintain steady, attentive eye contact as you ask; have your notepad open and ready — your visible readiness to write signals you take the clarification seriously; nod as the explanation continues.

Referencing 'a moment ago' (先ほど) signals you were listening and pinpoints exactly what needs clarification — far more professional than a vague 'もう一度お願いします'. In Japanese meetings, admitting confusion is a sign of engaged listening, not weakness, as long as the request is politely framed.