elan       
noun [ U ]  literary approving uk/eɪˈlæn/ us/eɪˈlæn/
 (尤指表演或举止方面的)热忱,活力
a combination of style and energetic confidence, especially in performances or manner
  She dances the role with such elan. 她热情奔放的舞姿将剧中人物演绎得淋漓尽致 
 As a prime minister, she had a certain elan. 作为一名首相,她相当有魄力。