靠铅酸电池驱动前进的特斯拉年代。

The Tesla of its day ran on lead-acid batteries.

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勤鼓励，驱动前进。

Third, encourages industriously, actuation advance.

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其他所有的四肢行走动物，例如狗，猫和马，这些功能被分配到不同肢体上，后肢主要负责驱动前进，而前肢则起到类似刹车的作用。

All other four-legged animals, like dogs or cats or horses, divvy up those duties. With their rear legs powering the push forward, and their front legs acting as brakes.

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