Question

aplomb

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a∙plomb / əˈplɑm ; əˈplɔm /
◙noun [U] [formal]
1. with aplomb, in a confident and skilful way especially when you have to deal with difficult problems or a difficult situation
• 游刃有余地，从容不迫地，泰然自若地:
 »Ms Sharpe handled their questions with great aplomb.
  夏普女士镇定自若地回答了他们的问题。