indeterminate [ˌɪndɪˈtɜ:rmɪnət]

例句:

• I hope to carry on for an indeterminate period.
  我希望能进行一段时期。
  
• She was a tall woman of indeterminate age.
  她是个看不出年龄的高大女子。
  
• Of course, the scope of Congress'delegation is often indeterminate.
  当然, 国会授权的范围常常是模糊不定的.
  
• The brothers are now serving indeterminate detention sentences.
  来自THETIMES
• There she met Herb, a foundling of indeterminate origin.
  来自NEWYORKER
• All were dressed in indeterminate shades of grey and brown.
  来自V. Woolf