uncertain

• Faith is an uncertain relief .
  信仰实在是一种解救，虽然看来有点渺茫。
• The evidence of this is uncertain .
  关于这一点还没有确切的证据。
• The date of the ship 's arrival is uncertain ..
  船到的日期未定。
• I am uncertain about how to get there .
  我不明确怎样才能到那里。
• The missionary offered an uncertain smile .
  教士报以迷惘的一笑。
• The outcome of the matter is still uncertain .
  此事还未见分晓。
• He was too intent, while too uncertain .
  他太热切了，反倒变得手足无措了。
• Short lifetime means uncertain mass .
  短寿命意味着质量不确定。
• As he grew older his temper became uncertain .
  他越大，脾气越发叫人捉摸不透。
• He was uncertain whether to stand up or remain sitting .
  他吃不准站好还是坐好。