unobtainable [ˌʌnəbˈteɪnəbl]

例句:

• Fish was unobtainable in certain sections of Tokyo.
  在东京的某些地方是买不到鱼的。
  
• Tickets seem unobtainable to the ordinary mortal.
  普通人好像根本买不到票。
  
• It would take a worldwide crisis to make food unobtainable from any source.
  只有发生全球性危机,才会到处买不到食品.
  
• The part is unobtainable in Yugoslavia.
  来自Guardian
• Staple foods are becoming unobtainable and the threat of widespread hunger looms.
  来自VOA
• When they tried to ring him up they were told the number was 'unobtainable'.
  来自E. Waugh