unflappable [ʌnˈflæpəbəl]

例句:

• A busy manager needs a completely unflappable secretary.
  经理工作忙,需要一个头脑十分冷静的秘书.
  
• Beneath his smart, generous, unflappable exterior lurks massive insecurity.
  他聪明大度 、 从容镇定的外表下实则潜藏着严重的危机感.
  
• The tone is teacherly, unflappable, optimistic ( Benjamin DeMott )
  这种腔调是教师似的 、 镇定 、 乐观的 ( 本杰明德莫特 )
  
• Weir, with his hound-dog looks is unflappable, and unexcitable.
  来自BBC
• He's our man in Lhasa, unflappable, a brick.
  来自THETIMES
• Mr. Cameron, officials report, works hard but is generally unflappable.
  来自WSJ