linchpin造句

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.

He is the linchpin of this firm.
他是这个公司的灵魂人物.

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