caper      
 verb [ I + adv/prep ] uk/ˈkeɪ.pər/ us/ˈkeɪ.pɚ/
 欢跃;雀跃
to run and jump about in an energetic, happy way
 caper  
noun uk/ˈkeɪ.pər/ us/ˈkeɪ.pɚ/
  (ACTIVITY)      
  [ C ]不法勾当;不同寻常的行为;可笑的活动 
an illegal, unusual, or entertaining activity
  The whole incident started as an innocent caper. 整个事件以一场并无恶意的闹剧开始。 
   (FOOD)     
 [ C usually plural ](用作调味料的)刺山柑花蕾 
a small, dark green flower bud that is used as an ingredient to give a slightly sour taste to food