punching bag

美 
英 
  • n.出气筒;沙袋;(练习拳击用的)吊袋
  • 网络攻击目标;沙包;练习拳击用的吊袋
复数:punching bags  
punching bag
n.
1.
(用于拳击训练的悬吊式)沙袋a heavy leather bag, hung on a rope, which is punched, especially by boxers as part of training, or as a form of exercise
— see also
punchbag

例句

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