linchpin [ˈlɪntʃˌpɪn]

例句:

• Controlling wages is the linchpin of the Government'spolicies.
  控制工资是政府政策的关键.
  
• In the engine's producing, researching, using and repairing, engine - testing is the linchpin.
  在发动机的生产研究和应用维修中, 发动机检测是其关键环节.
  
• But the linchpin that network channel builds is letter platform build.
  但网络渠道建设的关键是诚信平台的搭建.
  
• It lost Barclaycard as one of its linchpin business partners.
  来自THETIMES
• Binge viewing has turned into an unexpected linchpin in that effort.
  来自WSJ
• The linchpin of its existence was gone and could not be replaced.
  来自NEWYORKER