linchpin
n
1 pin passed through the end of an axle to keep the wheel in position 轮辖; 制轮楔.
2 (fig 比喻) person or thing that is vital to an organization, plan, etc (组织、 计画等中)关键性的人或事物
Controlling wages is the linchpin of the Government'spolicies. 控制工资是政府政策的关键.
🗣️ 情景例句
Hi, this is Tony, I have a flat tire, could you come and pick me up?
你好,我是托尼,我的车爆胎了,你能来接我吗?
Come what may, heaven won't fall.
船到桥头自会直。
The hovercraft travelled first over the water, then mounted the beach,