高速公路

请将下面这段话翻译成英文：

高速公路（express way）是一个国家走向现代化的桥梁，也是发展现代交通业的必要条件。近几年，中国高速公路蓬勃发展，截止到2012年，中国高速公路的总里程（total mileage）已经达到9.6万公里，位居世界第二。国家高速公路网建成后，通车里程将达10.8万公里，届时将覆盖超过90%的拥有20万以上城镇人口的城市。高速公路为道路运输创造了新的发展机遇和空间，也为沿线的经济腾飞增添了活力。现在，它已成为拉动内需、促进经济快速发展的重要因素之一。

参考翻译:

The express way is not only a bridge leading a country into modernization, but also an essential condition for the development of modern transportation. In recent years, China's express ways have experienced a flourishing development, with a total mileage of 96,000 kilometers by 2012，ranking the second in the world. The total mileage will reach 108,000 kilometers after the construction of the national express way network is completed. By then, over 90% of the cities with an urban population of more than 200,000 will have been covered. Express ways create new development opportunities and space for road transportation, adding vitality to the economic take-off along the way. Nowadays, it has become one of the most important factors in driving the domestic demand and fuelling the rapid development of economy.

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