纯电动汽车作为真正意义上的节能、环保交通工具，在经历了100多年风风雨雨后的今天又重新被人们所重视。
The EV as a true saving on fuel and environmental protection traffic tool has been taken seriously again after experienced hard time over 100 years.
镁合金若能成为一种新型的发动机材料，能更有效地减轻汽车自重，真正实现环保节能的目标。
If magnesium alloy is capable to be a new type of engine material, it is more effective to reduce vehicle weight and to achieve the goal of energy-saving and environmental protection.
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