These are five possible ways, then, of controlling air pollution caused by cars.

以上是控制轿车空气污染的五个可行的方法。

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The paper introduces the indoors environmental air pollution caused by fitment and the harm of it, and then puts forward some control countermeasures.

介绍了由装修带来的室内环境空气污染及其危害，并就此提出一些控制对策。

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These are five possible ways, then, of controlling air pollution caused by cars.

为了控制或减少轿车对空气的污染，上述五种方法都可以予以考虑。

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The package would "allow EU governments to calculate costs related to noise, air pollution and congestion caused by lorries, and then levy the relevant charge, " he said.

BBC: EU plans new charges for lorries