linchpin

名词 linchpin:

1. a central cohesive source of support and stability
   同义词：anchor, mainstay, keystone, backbone, lynchpin
2. pin inserted through an axletree to hold a wheel on
   同义词：lynchpin

1. Controlling wages is the linchpin of the Government'spolicies.
   控制工资是政府政策的关键。

linchpin 或 lynch.pin

n.（名词）
A locking pin inserted in the end of a shaft, as in an axle, to prevent a wheel from slipping off.
车辖，制轮：装在辕底部，如车轴上用来预防车轮滑动锁栓
A central cohesive element:
关键：重要凝聚力的因素：
例句：
Reduced spending is the linchpin of their economic program.
减少支出是这个经济计划的关键

来源：
Middle English linspin
中古英语 linspin
lins [linchpin] from Old English lynis
lins [栓] 源自 古英语 lynis
pin [pin] from Old English pinn * see pin
pin [椎] 源自 古英语 pinn *参见 pin