n.孔；穿孔
This prevents bowel perforation. 這樣可以防止腸道穿孔。
The acute Perforation has developed. 發(fā)生急性穿孔。
Excessive pressure can lead to perforation of the stomach wall. 過大的壓力會(huì)導(dǎo)致胃壁穿孔。
齒孔
