uncertain

• An uncertain but unceasing disquiet is upon me ...
  不知道什么缘故，我始终觉得心里七上八下的。
• I told him what i thought of him in no uncertain terms !
  我毫不含糊地把我对他的看法告诉了他。
• He has an uncertain temper .
  他性情不定。
• He was already uncertain whether it had happened .
  他已经在开始怀疑，是不是真的发生过这样的情况。
• Heaven 's way is uncertain .
  天道无常。
• The localization can be considered uncertain to this extent .
  在这个程度上局部化可以认为是不明确的。
• Feeble and uncertain securities were thrown upon the market .
  虚弱的或者没有把握的证券都向市场抛售了。
• He looked to the right and to the left, uncertain whither to fly .
  他向左右两边张望，拿不准该往哪边逃。
• All were interested, considerate; but things were very uncertain .
  大家都关切持重；但是事情很没有把握。