arrowhead [ˈæroʊhed]

例句:

• The small red arrowhead shew us the subject's visual noise processing ability.
  红色小箭头指示受试着的视觉噪声处理能力.
  
• The Indians chipped flint arrowhead.
  印第安人凿制燧石箭头.
  
• An arrowhead is never used at the radius center.
  箭头永远不可以指向圆心.
  
• If it takes intelligence to make an arrowhead, why doesn't it take vastly more intelligence to create a human?
  来自SA
• The presence of an arrowhead in the spine and unhealed skull trauma both suggest a violent death.
  来自THETIMES
• Leaving the open bayou, the canoes turn into the forest and slide among the trunks of cypress under feathery arrowhead crowns.
  来自NEWYORKER