A steering knuckle is the key component in cars, which needs high requirements in dimensional accuracy and product quality.

轿车转向节是轿车上的关键零件，对尺寸精度和产品质量要求很高。

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Shortly after imparting this significant fact, he drives us on a white-knuckle ride up narrow switchbacks to the top of 1, 000ft-high Cedar Mesa.

BBC: Missing pieces in Utah