protrusion [proʊˈtru:ʒn]

例句:

• He grabbed at a protrusion of rock with his right hand.
  他用右手抓住了一块凸起的岩石。
  
• a protrusion on the rock face
  岩石表面的突起部分
  
• Thumb - sucking can cause protrusion of the teeth.
  经常吮吸拇指能使牙齿向外突出.
  
• It may also be used to reconstruct the appearance of the face and relieve protrusion of the eyes.
  来自BBC
• The only protrusion from one's body might be the nose, due to the extra articles of clothing needed to ward off frostbite.
  来自SA
• The ball players kick the ball towards the goal, a tiny vacant hole in a juting protrusion.
  来自SA