催化转化器能减少汽车排放物中的有害成分，是目前最有效的汽车排放控制装备。
Presently, catalytic converter is the most effective equipment to emission control, which can reduce harmful ingredient of automobile emission.
铂：在珠宝中被普遍使用，在我们的汽车的控制废气排放的装置中，铂的使用更为常见。
Platinum (Pt): Most familiar for its use in jewelry, platinum is more often used in the systems that control vehicle emissions in our cars.
比如，美国采取管制的形式来控制汽车尾气排放，而欧洲采用征收燃料税的方法。
Vehicle emissions, for instance, are controlled by regulation in America, whereas they are mostly discouraged by fuel taxes in Europe.
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