spearhead [ˈspɪrhed]

例句:

• American troops formed the spearhead of the attack.
  美军是这次进攻的先头部队.
  
• The marines went ashore as a spearhead this morning to capture key targets.
  今天早晨，海军陆战队作为先头部队率先登陆以占领主要目标。
  
• He seemed to spearhead every important city so fearlessly and successfully.
  每次进攻重要城市,他似乎都以大无畏的精神充当先锋,而且攻无不克,战无不胜.
  
• Coe was the face of the Games as well as its spearhead.
  来自THETIMES
• His initial find, a spearhead, was reported to a finds liaison officer and the site excavated by archaeologists.
  来自BBC
• I challenge David Biello to spearhead research into the location of the L Spot as the first step toward an effective treatment.
  来自SA