unsure [ˌʌnˈʃʊr]

例句:

• The evening show was terrible, with hesitant unsure performances from all.
  晚上的演出很糟，所有人都缩手缩脚，显得很不自信。
  
• Scientists are becoming increasingly unsure of the validity of this technique.
  科学家们越来越拿不准这一技术是否正当合法。
  
• He made her feel hot, and awkward, and unsure of herself.
  他令她内心躁动，手足无措，对自己没有信心。
  
• So people are now very unsure of the future.
  来自VOA
• But you are unsure which funds you should pick.
  来自THETIMES
• We are willing fantasists, unsure of our ground.
  来自NEWYORKER