caving [ˈkeɪvɪŋ]

例句:

• St. Helens and on a snow-caving expedition to Mt.
  来自NEWYORKER
• He had always wanted to go caving .
  他过去一直想探索洞穴。
  
• With the roof caving in, there were an increasing number of desertions.
  由于大势已去, 逃兵的人数日益增多.
  
• Caving means exploring the passages underneath the hills.
  洞穴探险运动是指探察山中的通道而进行的活动.
  
• There's no sense that the world is caving in.
  来自NEWYORKER
• Caving into the fear mongering propaganda.
  来自SA