whirligig [ˈwɜ:rligɪg]

例句:

• the whirligig of fashion
  时尚的千变万化
  
• Our feelings of happiness and sorrow are soon lost in the whirligig of time.
  我们感情上的悲欢会随着时间的流逝很快消失.
  
• The ancient doctor - patient relationship changes following the whirligig of time and society.
  古代医患关系因时代与社会的变迁而有所改变.
  
• The whirligig of reason came to rest at truth.
  来自H. Jacobson
• Whirligig beetles use ripples to detect prey and obstacles.
  来自BBC
• Life is a whirligig, and who knows what next?
  来自R. Macaulay