unassailable [ˌʌnəˈseləbəl]

例句:

• The decision to publish it was defensible though far from unassailable.
  来自WSJ
• That was enough to give Mansell an unassailable lead.
  那足以让曼塞尔获得别人无法撼动的领先地位。
  
• His legal position is unassailable.
  他的合法地位是不容置疑的。
  
• Liverpool football club are still looking unassailable.
  利物浦足球俱乐部显得依然坚如磐石。
  
• Only last month, after all, Tesco looked unassailable.
  来自THETIMES
• His rank as full professor is unassailable.
  来自J. C. Oates