Servicing just the front brakes is fine and can save you money as long as the rear brakes are in good condition.

维修只是前轮煞车是美好的，可以节省你的金钱只要后方刹车处于良好的工作状态。

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The 70 kilogram, one meter long, aluminum quadruped might not look like much, but it can run, jump and rear on its back legs and signals major inroads in the effort to creating robots that can save human lives.

FORBES: In Italy A Quadruped Robot Takes First Steps