undecidable ['ʌndɪ'saɪdəbl]

例句:

• Most problems with infinite input are undecidable by algorithm.
  来自SA
• So subjects assessed true statements as believable faster than they judged them as unbelievable or undecidable.
  来自SA
• The researchers presented the subjects with a series of statements designed to be plainly true, false or undecidable.
  来自SA