求翻译：陆地交通的形式，与其说取决于技术，不如说取决于政治、经济和环境方面的考虑。我们现在就可以建造更坚固、更安静、更防滑的道路，但却不建，因为费用太高。我们可以在高速公路两旁安装隔音板并且设计出尾气更少、轮胎噪音低的卡车，从而使交通噪音减半，但我们不愿意掏这笔钱。环保游说者们已对汽车厂商产生了巨大影响，对尾气排放的控制已经严格了许多，但是在控制空气污染方面仍然任重而道远。是什么意思？

In the form of land transportation, is not so much depending on the technology, as it depends on the political, economic and environmental considerations. We are now able to build more robust, quieter, more anti-skid road, but not built, because costs are too high. We can install noise barriers alon

Land-based transport, and that the form depends on technology, but rather depends on the political, economic and environmental considerations. We can now build a stronger, quieter, more non-slip road, but it does not, because of the high costs. We can be installed on either side of a freeway noise b

Land transportation form, said is decided in the technology, was not better than said is decided in political, the economical and the environment aspect consideration.We may make firmly, more peaceful, the skid resistant path now, but does not construct actually, because the expense too is high.And

Form of land transportation, much depends on the technology, rather than depending on the political, economic and environmental considerations. We can now build stronger, quieter, more slip roads, but not built, because the cost was too high. We can be installed on both sides of Highway noise barrie

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