奥林匹克公园内采用零排放车辆和超低排放车辆。
In the Olympic Green, no emission or ultra-low emission vehicles will be used.
另外一个重要原因是在全国范围内强制取缔不清洁的柴油卡车以及扩大零排放车辆的使用。
A statewide crackdown on dirty diesel lorries and a push to expand use of zero-emission vehicles are also a big part of the story.
第一，一个削弱这项“强制要求”的伎俩，是用混合燃料替代纯zev，并让“部分零排放车辆”“PZEV”更好利用汽油。
First, one ploy to weaken the Mandate was the idea of trading off pure ZEV production for hybrids, and giving "PZEV" for better gas mileage.
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