Selection of aluminum alloys is helpful to reduce the weight of car bodies.
选用铝合金有助于减轻车身的重量。
One cool bit: the tires were chiseled from solid blocks of rubber, the only way to support the weight of the car.
非常酷的一点：轮胎由结实的橡胶环刻而成(当时的轮胎都不充气的)，这是唯一能支撑车重的方法。
This would mean Volvo could shrink the size of its hybrid battery - and cut down the weight of the car, making it more efficient.
这意味着沃尔沃混合动力电池的身材将会边小，整车的重量会减轻，车的性能也会提高。
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