fleeting [ˈflitɪŋ]

例句:

• We only had a fleeting glimpse of the sun all day.
  一整天我们只看到太阳露了一下脸.
  
• Art is long , and time is fleeting.
  时光飞逝, 学艺无穷.
  
• The world is like a fleeting show.
  人世如白驹过隙.
  
• He did see them, for a fleeting instant.
  来自G. Orwell
• Our moments of happiness are fleeting, at best.
  来自SA
• Stability will be more and more fleeting perhaps permanently.
  来自WSJ