Air pollution is at its worst over big cities where millions of people live, work, and travel about in cars, buses, and trucks.

好几百万人在城市里工作、生活，还以轿车、公共汽车和卡车为交通工具，因而这种百万人口的城市空气污染最为严重。

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The auto industry has shown how it can improve fuel efficiency, so we must work out a timely updating of such standards for cars, light trucks, and SUVs.

汽车生产业已经向我们展示了他们如何提高燃料效率，而我们要必须及时地对汽车，轻卡，越野车，制定一个新的这样的标准。

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Drive Vehicles over to your Compound while they still work. Mobile Homes, School Buses, Fire Engine Tankers &Ladders, Electrical Contractor Cherry Pickers (for Hunting Blinds), Flatbeds, Box Trucks.

把能开的车都开到你的住处边上，最好是房车、校车、消防车、电力公司的起重机（狩猎用）、平板车或运输卡车一类的大车。

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We expanded that to work trucks just a few months ago for the first time ever.

WHITEHOUSE: Press Briefing

Of course, the state government still must do business with private entities the highway department, for example , needs to buy work trucks.

FORBES: Constitutional Protection Against the Corporate State

The rules that were created working with the industry added certainty for cars and now we've added work trucks to that rule as well.

WHITEHOUSE: Press Briefing