The boss needs to check whether there is a crack or brake hose aging, brake disc, brake wear, in order to ensure that the vehicle braking performance is in good condition.

老板需要检查是否有裂纹或制动软管老化，制动盘，制动磨损，为了确保车辆制动性能状况良好。

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Ji 'nan Audi repair after a good test run, check whether the brake effect is reflected.

济南奥迪维修换好之后进行试车，检查制动效果是否体现出来。

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Choose good brakes can not only reduce the brake noise can also play a fuel-efficient environmental protection effect.

选择好的刹车片不仅能降低刹车噪音还能起到省油环保的效果。

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The pediatrician and developmental psychologist Ronald Dahl at the University of California, Berkeley, has a good metaphor for the result: Today's adolescents develop an accelerator a long time before they can steer and brake.

WSJ: What's Wrong With the Teenage Mind?