perforation [ˌpɜ:rfəˈreɪʃn]

例句:

• The acute Perforation has developed.
  发生急性穿孔.
  
• No water is entering through the deeper perforation.
  更深处的射孔则没有水进入.
  
• Involvement of the small bowel by primary or metastic neoplasms may occasionally be followed by perforation.
  原发性或转移性肿瘤累及小肠也偶可继发穿孔.
  
• Surgery may be needed to remove severely diseased parts of bowel, if there is perforation or if cancer has developed.
  来自BBC
• But, no one had looked in the small intestine or the area of pneumatosis for fear of perforation.
  来自SA