Usage Note
Expertise in French refers specifically to a formal assessment by an expert — a technical report or evaluation, not just general skill or knowledge. To express 'having expertise', French uses compétence or savoir-faire rather than expertise. The verb expertiser means to appraise or assess professionally.
Examples
"L'expertise du médecin légiste a duré deux heures."
Natural Translation
The forensic doctor's assessment lasted two hours.

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